You will be given a definition of a task first, then some input 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: Who did the man who won this county in the 1924 election run against in that election? Passage:Along with adjacent Newton County, Searcy is unique among Arkansas counties in being traditionally Republican in political leanings even during the overwhelmingly Democratic "Solid South" era. This Republicanism resulted from their historical paucity of slaves, in turn created by infertile soils unsuitable for intensive cotton farming, and produced support for the Union during the Civil War. These were the only two counties in Arkansas to be won by Alf Landon in 1936, Wendell Willkie in 1940, Charles Evans Hughes in 1916, and even Calvin Coolidge in 1924. In Presidential elections post-1932, Harry S. Truman and Jimmy Carter are the only Democrats to carry the county. In the 1992 election George H. W. Bush won his second-highest margin in the state, and the Republican nominee has received over 60 percent in Presidential elections from 2000 to 2012 inclusive. In 2016, Searcy County voted over 79 percent for Donald Trump, while former Arkansas First Lady Hillary Clinton received just 16 percent.
 Links: a. Calvin Coolidge b. Calvin Coolidge c. Charles Evans Hughes d. Charles Evans Hughes
Output:
a