You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Loduring July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
. Links: a. Allies of World War II b. Wesel c. Operation Market Garden d. Air Support.
Solution: c
Why? The passage describes the 704th's actions during Operation Market Garden.

New input: Question: What was the population of San Sebastian the year that Cavero was born there? Passage:Born in San Sebastian on 1 August 1929, Cavero attended Our Lady of Remembrance College, Madrid before commencing studies in law and economics at the University of Deusto. Cavero completed his legal studies at the Complutense University of Madrid, where he later taught. Cavero joined the in 1973, and left the group two years later. At that time, Cavero also ended his involvement with the Democratic Left. In 1975, Cavero became a founding member of the . After joining the Union of the Democratic Centre, Cavero was elected to his first term on the Congress of Deputies as a representative from Madrid. He was reelected in 1979, as a deputy from Baleares. While serving consecutive terms as a member of the Congress of Deputies, Cavero also held several cabinet positions. He contested the congressional elections in 1982 in Grenada, but did not win. He remained the general secretary of the UDC until the party's dissolution in 1983. Cavero then assumed leadership roles in the People's Democratic Party and returned to the Congress of Deputies, winning election from Madrid in 1986. Cavero switched party affiliation to the Democratic and Social Centre in 1989 and ran for reelection in Burgos. He lost that year's election, and became a member of the People's Party in 1991. Cavero was named to the Spanish Council of State in 1996, and served until his death on 25 December 2002, of a heart attack at Clinica de La Luz in Madrid. He was 73.
Links: a. Spanish Council of State b. Democratic and Social Centre (Spain) c. San Sebastian d. Congress of Deputies
Solution:
c