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.

Example Input: Question: Did "Don't Let Me Down" win any awards? Passage:Hardesty's solo recordings began in 1957; the first two, organized by the guitarist Mickey Baker, were never released are not known to exist. Twelve songs were recorded on January 15, 1958, at Cosimo Matassa's studio in New Orleans for Wing Records, a subsidiary of Mercury Records, but were never released until the 2012 CD The Domino Effect was issued worldwide by Ace Records (United Kingdom). The first time that Hardesty's name appeared on a single was with the Canadian vocal quartet the Diamonds, "Don't Let Me Down" (also known as "Chick-Lets"), which was recorded on March 4, 1958, and released the following month as Mercury 71291. In 1959, Hardesty recorded four tracks in New York City with Hank Jones. Two were released as a single on Paoli, the only release from this label; they were also released shortly after by Mutual, both labels having connections to Philadelphia. The Mutual release was listed on Philadelphia radio station WIBG's Future Forty chart for November 2, 1959, but did not chart elsewhere. The four tracks were purchased by King Records in 1961 and were re-released as two 45s by Federal Records in April and June 1961. Hardesty recorded four more songs in October 1961, which were released in 1962 by Federal; two are not instrumentals and had vocals by the New Orleans guitarist Walter "Papoose" Nelson. Hardesty co-wrote the title track of Fats Domino's 1964 album, Fats on Fire.
 Links: a. Single (music) b. The Diamonds c. The Diamonds d. The Diamonds
Example Output: b

Example Input: Question: Did other scientists keep blending inheritance open for further consideration? Passage:In the preface, Fisher considers some general points, including that there must be an understanding of natural selection distinct from that of evolution, and that the then-recent advances in the field of genetics (see history of genetics) now allowed this. In the first chapter, Fisher considers the nature of inheritance, rejecting blending inheritance, because it would eliminate genetic variance, in favour of particulate inheritance. The second chapter introduces Fisher's fundamental theorem of natural selection. The third considers the evolution of dominance, which Fisher believed was strongly influenced by modifiers. Other chapters discuss parental investment, Fisher's geometric model, concerning how spontaneous mutations affect biological fitness, Fisher's principle which explains why the sex ratio between males and females is almost always 1:1, reproductive value, examining the demography of having girl children. Using his knowledge of statistics, the Fisherian runaway, which explores how sexual selection can lead to a positive feedback runaway loop, producing features such as the peacock's plumage. He also wrote about the evolution of dominance, which explores genetic dominance. The last five chapters (8-12) include Fisher's more idiosyncratic views on eugenics.
 Links: a. Sexual selection b. Demography c. Blending inheritance d. Parental investment
Example Output: c

Example Input: Question: How old was Richard Crossman when Leewelyn-Davies received her life peerage as Baroness of Hastoe? Passage:Llewelyn-Davies entered the civil service in 1940 and served in the Ministry of War Transport, the Foreign Office, the Air Ministry and the Commonwealth Relations Office. She resigned to contest the Wolverhampton South-West parliamentary seat for Labour during the 1951 general election, but was defeated by the incumbent Conservative Enoch Powell. She subsequently unsuccessfully contested the Wandsworth Central seat in 1955 and 1959, but didn't stand for parliament again. With support of those in the Wilson government and the backing of close friend Richard Crossman, who described her in his diaries as "the real politician" when her husband was elevated to the peerage, she was created a life peer as Baroness Llewelyn-Davies of Hastoe, of Hastoe in the County of Hertfordshire on 29 August 1967. She went on to serve as a Government whip in the House of Lords between 1969 and 1970, and as Opposition Deputy Chief Whip from 1972. In 1973 she was elected Chief Whip, becoming the first woman to take charge of a whip's office in either house. On the return of the Labour Party to government in 1974 she became Captain of the Gentlemen-at-Arms (Government Chief Whip). In 1975, she became a Privy Counsellor. From 1979 to 1982 she was once again Opposition Chief Whip. From 1982 to 1987, she was Principal Deputy Chairman of Committees in the House of Lords, an office carrying with it the role of Chairman of the European Communities Committee.
 Links: a. Foreign and Commonwealth Office b. Richard Crossman c. Richard Crossman d. Richard Crossman
Example Output:
b