instruction:
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:
Question: How old was the commander in chief when he coordinated a massive anti-guerrilla operation? Passage:In 1970, 22-year-old Crespo had dropped out of IST and was eventually drafted into military service in the Portuguese Colonial War. He transferred to Mozambique where his military occupation was to check the cement cargoes from Beira to the Cahora Bassa Dam construction site, near Tete. Some time later, due to his good fluency in English, he was placed in the press office of Kaúlza de Arriaga, the commander in chief of the Portuguese Armed Forces in Mozambique, who had coordinated a massive anti-guerrilla operation against FRELIMO separatists in 1970 - the Gordian Knot Operation. While serving in the army, Crespo also entered the newly created School of Medicine of the University of Lourenço Marques where he would complete a number of academic disciplines but did not graduate. He also married Helen de Souza from Johannesburg, a South African woman with Portuguese ancestry who worked in genetics. After the Carnation Revolution left-leaning military coup at Lisbon in April 1974, fresh out of the troop, Crespo fled Mozambique for South Africa.
 Links: a. Portuguese Colonial War b. Tete, Mozambique c. Kaúlza de Arriaga d. Kaúlza de Arriaga
answer:
c


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
answer:
c


question:
Question: How long is the road that intersects with PA 528 in Jackson Township? Passage:PA 528 begins at an intersection with US 19 in Jackson Township, heading northeast on two-lane undivided Lindsay Road. A short distance past US 19, the route comes to a partial interchange with Interstate 79 (I-79), with access to the southbound direction, and from the northbound direction of I-79. After this interchange, the road passes east of a park and ride lot and heads northeast through wooded areas with some rural homes. PA 528 comes to an intersection with PA 68, at which point the route turns southeast to form a concurrency with PA 68 on Evans City Road. The road passes through woods before heading into the borough of Evans City, where it becomes West Main Street and runs past homes and businesses. The two routes curve to the east and cross the P&W Subdivision railroad line, which is owned by CSX and operated by the Buffalo and Pittsburgh Railroad, and the Breakneck Creek into the commercial downtown of Evans City, becoming East Main Street. PA 528 splits from PA 68 by turning north onto Franklin Street and passing residences before heading into woods. The route leaves Evans City for Jackson Township again and becomes Prospect Road. The road curves northeast and enters Forward Township, coming into a mix of farmland and woodland with a few rural homes. PA 528 continues north and crosses over a Buffalo and Pittsburgh Railroad line before reaching the community of Wahlville. 
 Links: a. Pennsylvania Route 68 b. Park and ride c. U.S. Route 19 in Pennsylvania d. U.S. Route 19 in Pennsylvania
answer:

c