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.

[Q]: Question: At what age did Litto Nebbia write La balsa? Passage:"La balsa" (; Spanish for "the raft") is the debut single by the Argentine band Los Gatos, released on July 3, 1967 on Vik, a subsidiary of RCA Victor. Formed in 1967 after the disbandment of Los Gatos Salvajes, Los Gatos were the house band of the bar La Cueva, which became a popular meeting place for rock enthusiasts and the birthplace of Argentine rock—known locally as rock nacional (Spanish for "national rock"). During the mid-to-late 1960s, Buenos Aires was experiencing a cultural blossoming characterized by innovations in modern art, literature and cinema, largely driven by a burgeoning youth subculture that adhered to the countercultural phenomenon of the decade. The underground had its center in La Cueva, Plaza Francia and the Torcuato di Tella Institute, and identified with British Invasion music and the sexual revolution. "La balsa" was written by Litto Nebbia—lead vocalist of the band—and Tanguito (credited as Ramsés) on May 2, 1967, in the men's toilet of La Perla de Once, another bar frequented by the group. At the time, Argentina was under a military dictatorship led by Juan Carlos Onganía, which regularly imprisoned and persecuted these young bohemians.
 Links: a. Los Gatos Salvajes (band) b. Juan Carlos Onganía c. Juan Carlos Onganía d. Litto Nebbia
[A]: d


[Q]: Question: How old was Derow's teacher and lasting influence at Oxford when Derow graduated from Oxford? Passage:Born in Newport, Rhode Island, Derow obtained his secondary education at The Roxbury Latin School in West Roxbury, Massachusetts. After an A.B. degree at Amherst (with Peter K. Marshall), he read for Greats as a second B.A. degree at Oxford in 1965–1967, achieving a First. At Oxford he was taught by, among others, W. G. (George) Forrest, who was a lasting influence. He completed a Ph.D. at Princeton on 'Rome and the Greek world from the earliest contacts to the end of the first Illyrian war', for which Professor J. V. A. Fine was his Advisor; in the preface to that work, he acknowledges the additional inspiration he had drawn from T. J. Luce and the historian and epigrapher C. Bradford Welles. After a spell of teaching at the University of Toronto, he returned to succeed Forrest at Wadham in 1977 when the latter was elected to the Wykeham Professorship of Ancient History at New College. In 2002–2005 Derow was also Director of Graduate Studies in ancient history for the Oxford Faculty of Classics.
 Links: a. George Forrest (historian) b. Roxbury Latin School c. Roxbury Latin School d. Princeton University
[A]: a


[Q]: Question: How old was Napoleon Bonaparte at the time of the invasion of the Iberian Peninsula? Passage:The invasion of the Iberian Peninsula in 1807-08 by Napoleon Bonaparte's forces proved to be critical for the independence struggle in South America, during which the local elites of Upper Peru remained mostly loyal to Spain, supporting Junta Central, a government which ruled in the name of the overthrown king Ferdinand VII of Spain. A number of radical criollos in 1808-10 began a local power struggle. Pedro Domingo Murillo proclaimed an independent state in Upper Peru in the name of king Ferdinand VII. During the following seven years Upper Peru became the battleground between the armed forces of independent United Provinces of the Rio de la Plata and royalist troops from Viceroyalty of Peru.
 Links: a. Criollo people b. Napoleon c. Iberian Peninsula d. Spanish American wars of independence
[A]:
b