In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Ex Input:
Question: Which state where Peganum harmala is found is the most populous? Passage:It was first planted in the United States in 1928 in New Mexico by a farmer wanting to manufacture a dye called "Turkish red" from its seeds. From here the plant spread over most of southern New Mexico and the Big Bend region of Texas. An additional spread has occurred from east of Los Angeles in California to the tip of southernmost Nevada. Outside of these regions the distribution in the USA is not continuous and localised. As of 2019 it has been reported in southern Arizona (in at least 3 adjacent counties), northeastern Montana (2 adjacent counties), northern Nevada (Churchill county), Oregon (town of Prineville in the Oregon high desert) and possibly Washington. "Because it is so drought tolerant, African rue can displace the native saltbushes and grasses growing in the salt-desert shrub lands of the Western U.S."
 Links: a. Montana b. Churchill County, Nevada c. New Mexico d. Oregon

Ex Output:
c


Ex Input:
Question: How old was Nusslein-Volhard when she won the Nobel Prize in Physiology and Medicine? Passage:The concept of the morphogen has a long history in developmental biology, dating back to the work of the pioneering Drosophila (fruit fly) geneticist, Thomas Hunt Morgan, in the early 20th century. Lewis Wolpert refined the morphogen concept in the 1960s with the French flag model, which described how a morphogen could subdivide a tissue into domains of different target gene expression (corresponding to the colours of the French flag). This model was championed by the leading Drosophila biologist, Peter Lawrence. Christiane Nusslein-Volhard was the first to identify a morphogen, Bicoid, one of the transcription factors present in a gradient in the Drosophila syncitial embryo. She was awarded the 1995 Nobel Prize in Physiology and Medicine for her work explaining the morphogenic embryology of the common fruit fly. Groups led by Gary Struhl and Stephen Cohen then demonstrated that a secreted signalling protein, Decapentaplegic (the Drosophila homologue of transforming growth factor beta), acted as a morphogen during the later stages of Drosophila development.
 Links: a. Christiane Nüsslein-Volhard b. Lewis Wolpert c. Lewis Wolpert d. Transcription factor

Ex Output:
a


Ex Input:
Question: How many members were there in the group that Laskov became a commander of? Passage:Laskov joined the Haganah as a teenager, and served in various units, including Orde Wingate's Special Night Squads. He also served as a personal messenger for Yaakov Dori, who would later become the first Chief of Staff. In 1940, Laskov joined the British Army so that he could participate in World War II. He served in various capacities, and was a commander of the Jewish Brigade which saw action on the Italian front, eventually reaching the rank of major. After the war, he remained in Europe to participate in the Aliyah Bet illegal immigration effort to bring refugee Jews to Palestine. He also took part in various illicit acts of vengeance against the Nazis and their collaborators. Upon eventually returning to Palestine, he rejoined the Haganah, while also working as chief of security for the electric company.
 Links: a. Orde Wingate b. Major (United Kingdom) c. Jewish Brigade d. Jewish Brigade

Ex Output:

c