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: How many years before the The Portuguese found Cape Palmas was it first discovered? Passage:Down the coast of Africa: The Portuguese reached the westernmost point of Africa in 1444 and in 1458 rounded Cape Palmas where the coast tends eastward. Here the trade winds gave out and they faced the irregular winds near the doldrums and the east-flowing Guinea Current. In 1471 they reached the Gold coast where they found the gold that had previously come by caravan across the Sahara. In 1474 Lopes Goncalves reached the point where the coast turns south and became the first European sailor to cross the equator. In 1475-79 Spain and Portugal fought along the coast. The Treaty of Alcacovas gave the whole area to the Portuguese except for the Canaries. This was the first colonial war and the first colonial treaty. In 1482 Diogo Cao continued south against the Benguela current and the southeast trade winds, reaching the Congo River in 1482 and Cape Cross in Namibia in 1485. In 1487 Bartolomeu Dias reached Cape Voltas near the mouth of the Orange River and stood out to sea. Although the sources are not clear, he may have guessed that there were southern westerlies and was trying a volta do mar. After many days, at about 40 degrees south he discovered the westerlies and turned east. Finding no land after a number of days he turned north and reached Mossel Bay about 400km east of Cape Town. He continued east against the Agulhas current to Algoa Bay where the coast began to turn north. Guessing that he had found the route to India, he turned back, discovered and rounded the Cape of Good Hope and reached Lisbon in 1488. In 1493 Columbus arrived at Lisbon with news of the new world and reported that he had sailed out of sight of land for five weeks.
Links: a. Mossel Bay b. Gold Coast (region) c. Congo River d. Cape Palmas
Solution:
d