Definition: 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.
Input: Question: Who were the Three Witnesses to the Book of Mormon? Passage:Born near Mehoopany, Wyoming County, Pennsylvania, Harris was the son of Emer Harris and Deborah Lott. He was a nephew of Martin Harris, one of the Three Witnesses to the Book of Mormon, and a descendant of Thomas Harris, companion in exile of Roger Williams, and one of the founders of Providence, Rhode Island. Harris was baptized a member of Church of Jesus Christ of Latter Day Saints in September 1842, by Milton Stow, near Nauvoo, Illinois. Harris served as a guard in Nauvoo to protect Joseph Smith against mob violence. He also served in the Nauvoo Legion and witnessed the laying of the cornerstone of the Nauvoo Temple. After being driven with other Latter-day Saints from Nauvoo in 1846, he resided temporarily in St. Louis, Missouri until 1850, when he went to Kanesville, Iowa and then to Utah.
Links: a. Nauvoo Legion b. Martin Harris (Latter Day Saints) c. Nauvoo Legion d. Nauvoo, Illinois
Output:
b