Question: Pranava yoga meditates on the syllable that is a spiritual icon in what religion?

Context paragraphs:
Yoga: Yoga ( ; Sanskrit, योगः Listen) is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India.  There is a broad variety of yoga schools, practices, and goals in Hinduism, Buddhism, and Jainism.  Among the most well-known types of yoga are Hatha yoga and Rāja yoga.

Karma yoga: Karma yoga, also called Karma marga, is one of the several spiritual paths in Hinduism, one based on the "yoga of action".  To a "karma yogi", right work done well is a form of prayer.  It is one of the paths in the spiritual practices of Hindus, others being Raja yoga ,Jnana yoga (path of knowledge) and Bhakti yoga (path of loving devotion to a personal god).  The three paths are not mutually exclusive in Hinduism, but the relative emphasis between Karma yoga, Jnana yoga and Bhakti yoga varies by the individual.

Bhakti yoga: Bhakti yoga, also called Bhakti marga (literally the path of "Bhakti"), is a spiritual path or spiritual practice within Hinduism focused on loving devotion towards a personal god.  It is one of the paths in the spiritual practices of Hindus, others being Jnana yoga and Karma yoga.  The tradition has ancient roots.  Bhakti is mentioned in the "Shvetashvatara Upanishad" where it simply means participation, devotion and love for any endeavor.  "Bhakti yoga" as one of three spiritual paths for salvation is discussed in depth by the "Bhagavad Gita".

Om: Om (   , IAST: "Auṃ" or "Oṃ", Devanagari: ॐ ) is a sacred sound and a spiritual icon in Hindu religion.  It is also a mantra in Hinduism, Buddhism, Jainism, and Sikhism.

Yoga of Synthesis: Swami Sivananda's approach to yoga was to combine the four main paths - karma yoga, bhakti yoga, jnana yoga and raja yoga along with various sub-yogas such as kirtan and hatha yoga.  This is reflected in the motto of the society that he formed, the Divine Life Society.  The motto says, "Serve (Karma Yoga), Love (Bhakti Yoga), Meditate (Jnana Yoga), Realise (Raja Yoga)."  In his own words, "One-sided development is not commendable.  Religion and Yoga must educate and develop the whole man - his heart, intellect and hand."

Jnana yoga: Jñāna yoga, also known as Jnanamarga, is one of the several spiritual paths in Hinduism that emphasizes the "path of knowledge", also known as the "path of self-realization".  It is one of the three classical paths ("margas") for moksha (salvation, liberation).  The other two are karma yoga (path of action, "karmamarga") and bhakti yoga (path of loving devotion to a personal god, "bhaktimarga").  Later, new movements within Hinduism added raja yoga as the fourth spiritual path, but this is not universally accepted as distinct to other three.

Pranava yoga: Pranava yoga is meditation on the sacred mantra Om, as outlined in the Upanishads, the "Bhagavad Gita", and the "Yoga Sutras of Patanjali".  It is also called "Aum yoga" and "Aum yoga meditation".  It is, simply put, fixing the mind on the sound of the mantra “Aum” – the sacred syllable that both symbolizes and embodies Brahman, the Absolute Reality – as the mantra is constantly repeated in unison with the breath.  The purpose of pranava yoga is to become free from suffering and limitation.

Sivananda Ashram Yoga Retreat Bahamas: The Sivananda ashram Yoga Retreat Bahamas is a traditional yoga ashram established in late 1967 on Paradise Island in the The Bahamas.  Founded on the teachings of Guru Swami Vishnudevananda Saraswati, a disciple of the Indian sage Swami Sivananda Saraswati, the ashram follows a daily schedule designed to support spiritual practice and evolution, as well as a yogic lifestyle.  Besides being a permanent home to many brahmacharyas, swamis and other students of yoga, guest speakers, teachers, and leaders from all over the world present 365 nights a year during nightly Satsangs to explore spirituality, and promote personal and social wellbeing.  With its many temples, platforms and meditation rooms, for 50 years the ashram has served as a destination for people seeking a spiritual environment to study and practice yoga and develop a healthy lifestyle.

Tao Porchon-Lynch: Tao Porchon-Lynch (born Täo Andrée Porchon, August 13, 1918) is a yoga master and award-winning author.  She discovered yoga in 1926 when she was eight years old in India and studied with Sri Aurobindo, B.K.S. Iyengar, K. Pattabhi Jois, Swami Prabhavananda, Maharishi Mahesh Yogi and Dr. Roman Ostoja.  She still teaches six to eight classes a week in New York, and leads programs across the globe.  She is the author of two books, including her autobiography, "Dancing Light: The Spiritual Side of Being Through the Eyes of a Modern Yoga Master", which won a 2016 IPPY Award and three 2016 International Book Awards.  In the front matter endorsement, Dr. Deepak Chopra said: "One of the most acclaimed yoga teachers of our century, Tao Porchon-Lynch... is a mentor to me who embodies the spirit of yoga and is an example of Ageless Body, Timeless Mind.  Like yoga, she teaches us to let go and to have exquisite awareness in every moment."

Graham Schweig: Graham M. Schweig (born August 2nd, 1953 in Manhattan, New York) is Professor of Religion and , Director of Studies in Religion, and former inaugural Director of the Asian Studies program at Christopher Newport University.  He is also Distinguished Teaching and Research Fellow at The Mira and Ajay Shingal Center for Dharma Studies of the Graduate Theological Union in Berkeley.  Schweig did his graduate studies at the University of Chicago and Harvard University and earned his doctorate in Comparative Religion from Harvard University and was a resident fellow of the Center for the Study of World Religions at Harvard.  Schweig was Lecturer at Duke University and later Visiting Associate Professor of Sanskrit at the University of Virginia.  Since 2007, Schweig has presented over three dozen invited lectures in his field at the the Smithsonian Institution in Washington, DC.Schweig is an "experienced registered yoga teacher at the 500 hour level (ERYT-500 as well as YACEP)" with Yoga Alliance, and he has held numerous teacher training workshops in the areas of yoga philosophy, history of yoga, Sanskrit for yoga teachers, and advanced trainings in meditation for teachers of yoga.  He has over one hundred publications, such as journal articles, encyclopedia articles, reviews, book chapters, along with several books in the field.  His book, "Dance of Divine Love: India's Classic Sacred Love Story: The Rasa Lila of Krishna" (Princeton University Press, 2005) presents an introduction to, comprehensive treatment and translation of the Bhagavata Purana's five chapters on the Rasa Dance of Krishna with the cowherd maidens of Vraja.  Another of his works is an introduction to, translation and interpretation of the Bhagavad-gita, entitled "Bhagavad Gita: The Beloved Lord's Secret Love Song" (Harper One / Harper Collins Publishers, 2010).  His most recent work is "A Living Theology of Krishna Bhakti: Essential Teachings of A. C. Bhaktivedanta Swami Prabhupāda", by Tamal Krishna Goswami, edited with an introduction and conclusion by Graham M. Schweig (Oxford University Press, New York, 2012).

Supporting paragraphs: Pranava yoga Om
Answer: Hindu