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: 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-Lôduring 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.
Example solution: c
Example explanation: The passage describes the 704th's actions during Operation Market Garden.

Problem: Question: How old was the first woman to serve as secretary when she became secretary? Passage:A position of great trust and responsibility, the Senate secretaryship has been held by a long line of distinguished individuals. Samuel Allyne Otis, the first secretary of the Senate, had previously been speaker of the Massachusetts legislature and a member of the Continental Congress. Otis held the post of secretary for twenty-five years, never missing a day that the Senate was in session. General Anson McCook of New York, a former House member and one of the "Fighting McCooks" of the Civil War, served as secretary, as well as a former Confederate general and Congressman, William R. Cox of North Carolina. In addition, two former U.S. senators, Charles Cutts of New Hampshire and Walter Lowrie of Pennsylvania, have later served as secretary. Other former House members who have held the post include Charles G. Bennett (NY). During the Ninety-ninth Congress (1985–1987), Jo-Anne Coe became the first woman to serve as secretary. 
 Links: a. Jo-Anne L. Coe b. American Civil War c. Confederate States Army d. Continental Congress

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Solution: a