Question: The predominant form of Hindu nationalism in India is the basis of which right-wing Hindu nationalist organisation?
Context: Hindutva ("Hinduness"), a term popularised by Vinayak Damodar Savarkar in 1923, is the predominant form of Hindu nationalism in India.  The Bharatiya Janata Party (BJP) adopted it as its official ideology in 1989.  It is championed by the Hindu nationalist volunteer organisation Rashtriya Swayamsevak Sangh (RSS) and its affiliate organisations, notably the Vishva Hindu Parishad. Vishnu Gupta (born 10 August 1984) is an Indian right-wing Hindu nationalist from Sakit, Uttar Pradesh.  He is the founder and president of the Hindu Sena.  Among the Hindu Sena's activities were campaigning for Donald Trump in the U.S. Presidential election of 2016, allegedly vandalising the regional office of Pakistan International Airlines in New Delhi, attacking the office of the Aam Admi Party, and protesting the "anti-national" news coverage of "The Indian Express".  On 25th December 2015 Gupta was arrested, two days after a PCR call by him alleging that beef was being served in the restaurant at Kerala House.  The police stated they were contemplating action against Gupta under Section 182 of the Indian Penal Code (false information, with intent to cause public servant to use his lawful power to the injury of another person). The Vishva Hindu Parishad (IAST: Viśva Hindū Pariṣada, pronunciation: /vɪʃv(ə) hɪnd̪uː pərɪʃəd̪/ , translation: "World Hindu Council"), abbreviated VHP, is an Indian right-wing Hindu nationalist organisation based on the ideology of "Hindutva".  The organisation has been described as "extremist", and characterised as "militant" for its activities in spearheading the Ram Janmabhoomi movement that led to the demolition of the Babri Masjid. Vinay Katiyar (born 11 November 1954 in Kanpur) is the founder-president of Bajrang Dal, the youth wing of the Hindu nationalist organisation Vishwa Hindu Parishad (VHP) in India.  He has served as a National General Secretary of the Bharatiya Janata Party (BJP), and as a Member of Parliament in the Lower House, Lok Sabha.  He is currently a member of the Upper House, the Rajya Sabha. Hindu Sena (IAST: Hindu Sēnā) (translation; "Army of Hindus"), also known by the name Sena, is an Indian Non-profit organization.  Its ideology is based on pro-Hindu ideology and Hindu nationalism (Hindutva), founded on 10 August 2011 by Vishnu Gupta, who is also its current leader.  The organization originally emerged from a movement in New Delhi demanding equal treatment for Hindus.  Members of Hindu Sena are referred to as Hindu sainiks.  Although the organization's primary base is still in New Delhi, it has tried to expand to a PAN-India base.  In the 2010, it gradually moved from advocating a pro-Hindu ideology to one supporting a broader Hindu nationalist agenda, as it refused to be aligned itself with the Bharatiya Janata Party.  The organization started taking part in center politics since its inception. Acharya Giriraj Kishore (4 February 1920 - 13 July 2014) was an Indian activist representing Hindu nationalism.  He served as senior vice-president of Vishwa Hindu Parishad, the religious wing of the Hindu nationalist Sangh Parivar. Mahatma Gandhi was assassinated on 30 January 1948 in the compound of Birla House (now Gandhi Smriti), a large mansion in central New Delhi.  His assassin was Nathuram Vinayak Godse, a Chitpavan brahmin from Pune, Maharashtra, a Hindu nationalist, a member of the political party, the Hindu Mahasabha, as well as a former member of the Rashtriya Swayamsevak Sangh (RSS), a right-wing Hindu paramilitary volunteer organization.  Godse had planned the assassination with other Hindus from various backgrounds including a refugee from the Partition of India and Pakistan in 1947. Lal Krishna Advani (born on 8 November 1927) known as L. K. Advani is an Indian politician who served as the 7th Deputy Prime Minister of India from 2002 to 2004 under Atal Bihari Vajpayee.  Advani also served as Minister of Home Affairs in the BJP-led National Democratic Alliance government from 1998 to 2004.  He is one of the co-founder and senior leader of Bharatiya Janata Party.  He was the Leader of the Opposition in the 10th Lok Sabha and 14th Lok Sabha.  Advani began his political career as a volunteer of Rashtriya Swayamsevak Sangh, a right-wing Hindu nationalist organisation.  In 2015 he was awarded the Padma Vibhushan, India's second highest civilian honor. The 2008 attacks on Christians in southern Karnataka refer to the wave of attacks directed against Christian churches and prayer halls in the Indian city of Mangalore and the surrounding area of southern Karnataka in September and October 2008 by Hindu extremist organisations, Bajrang Dal and the Sri Ram Sena.  The attacks were widely perceived by Christians in southern Karnataka to be punishment from right-wing Hindu nationalist organisations because they had been outspoken about Christian persecution in Orissa, after the assassination of Hindu monk Swami Lakshmanananda Saraswati allegedly by local christian community and also because the New Life Fellowship Trust (NLFT), a non-denominational Christian Church, was alleged by Bajrang Dal to be responsible for forced conversions of Hindus to Christianity. Saffron terror is a neologism used to describe acts of violence motivated by Hindu nationalism.  The acts are allegedly perpetrated by members, or alleged members, of Hindu nationalist organizations close to Rashtriya Swayamsevak Sangh (RSS) and Abhinav Bharat.
Answer: The Vishva Hindu Parishad