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: What languages did Commandino translate the works fo Aristarchus of Samos and Pappus of Alexandria from? Passage:Born in Urbino, he studied at Padua and at Ferrara, where he received his doctorate in medicine. He was most famous for his central role as translator of works of ancient mathematicians. In this, his sources were primarily written in Greek and secondarily in Arabic, while his translations were primarily in Latin and secondarily in Italian. He was responsible for the publication of many treatises of Archimedes. He also translated the works of Aristarchus of Samos (On the sizes and distances of the Sun and the Moon), Pappus of Alexandria (Mathematical collection), Hero of Alexandria (Pneumatics), Ptolemy of Alexandria (Planisphere and Analemma), Apollonius of Perga (Conics) and Euclid of Alexandria (Elements). Among his pupils was Guidobaldo del Monte and Bernardino Baldi. Commandino maintained a correspondence with the astronomer Francesco Maurolico. The proposition known as Commandino's theorem first appears in his work on centers of gravity.
 Links: a. Medicine b. Apollonius of Perga c. Aristarchus of Samos d. Medicine
c

Question: How many years did the owner of the private observatory live? Passage:It would seem that Gill's interests lay elsewhere since after a few years he sold the business, and then spent time equipping Lord Lindsay's private observatory at Dun Echt, Aberdeenshire. In 1874, Gill joined the expedition to Mauritius to observe the transit of Venus. Three years later he went to Ascension Island to observe a near approach of Mars and to calculate its distance. While carrying out these laborious calculations, he was notified of his appointment to the Cape Observatory, which, over the following 27 years he was to refurbish completely, turning it into a first-rate institution. Gill was a meticulous observer and had a flair for getting the best out of his instruments. His solar parallax observations with a heliometer and his calculations of distances to the nearer stars, are testimony to his outstanding work. He recruited Robert Innes to the Cape Observatory.
 Links: a. South African Astronomical Observatory b. Aberdeenshire (historic) c. James Lindsay, 26th Earl of Crawford d. South African Astronomical Observatory
c

Question: How many teams were in the same league as the Force? Passage:This is a list of seasons completed by the Georgia Force. The Force are a professional arena football franchise of the Arena Football League (AFL), based in Gwinnett County, Georgia, and plays its home games at the Arena at Gwinnett Center. The original team was established in 1997 as the Nashville Kats, and relocated to Georgia for the 2002 season, but similar to the Baltimore Ravens of the National Football League, who were previously the Cleveland Browns, the Force do not retain the history of the Kats, and are considered an expansion team. The Force found some success in the AFL, winning their division in three out of their final four seasons, but appeared in only one ArenaBowl in their existence, which was a losing effort. Prior to the 2009 season, the AFL announced that it had suspended operations indefinitely and canceled the 2009 season. The Force then announced that they would cease operations permanently.
 Links: a. Baltimore Ravens b. Arena Football League c. Baltimore Ravens d. Professional sports league organization

b