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.

[EX Q]: Question: When was the man whose name is used as the unit of radio wave frequency born?  Passage:A modulated radio wave, carrying an information signal, occupies a range of frequencies. See diagram. The information (modulation) in a radio signal is usually concentrated in narrow frequency bands called sidebands (SB) just above and below the carrier frequency. The width in hertz of the frequency range that the radio signal occupies, the highest frequency minus the lowest frequency, is called its bandwidth (BW). A given amount of bandwidth can carry the same amount of information (data rate in bits per second) regardless of where in the radio frequency spectrum it is located, so bandwidth is a measure of information-carrying capacity. The bandwidth required by a radio transmission depends on the data rate of the information (modulation signal) being sent, and the spectral efficiency of the modulation method used; how much data it can transmit in each kilohertz of bandwidth. Different types of information signals carried by radio have different data rates. For example, a television (video) signal has a greater data rate than an audio signal.
 Links: a. Data signaling rate b. Carrier wave c. Hertz d. Audio signal
[EX A]: c

[EX Q]: Question: Is the CEO of Radioshack a female? Passage:Many store closings ensued at the mall in the early 1990s, including five chain clothing stores and a T.J. Cinnamons bakery all in late 1991 and early 1992. Despite these closures, the mall also gained Champs Sports and a dollar store, and its occupancy level of 92 percent was higher than the average occupancy rate of 85 percent for malls in the Midwestern United States at the time. Limited Brands (now L Brands) opened three stores then under its ownership in 1993: a combination Limited Express/Structure store (now known as Express and Express Men, respectively) and Victoria's Secret. The combined Limited Express/Structure took the place of Herman's World of Sporting Goods, which had closed earlier in the year. According to the mall's then-general manager, Limited Brands had wanted to open all three brands at the mall for several years, and that all three were highly demanded by shoppers due to their presence at Meridian Mall. Following these additions, Lansing and Meridian malls had nearly 60 stores in common with each other and nearly 40 others that were unique to each. In 1995, the mall received new planters and an enlarged customer service booth. Meanwhile, RadioShack and Regis Hairstylists moved to new storefronts, Lane Bryant expanded its existing store, and Buckle, Bombay Company, and Pacific Sunwear joined. These were followed in 1996 by Gymboree, Bath & Body Works, and the second Disney Store in the state of Michigan.
 Links: a. Regis Corporation b. Bombay Company c. RadioShack d. Regis Corporation
[EX A]: c

[EX Q]: Question: Who other than Woldenga has been awarded the Knights cross of the Iron Cross? Passage:Woldenga's career started as a captain in the merchant marine. He started his flight training in 1928 and worked as chief pilot for the FVK Warnemünde. He transferred to the newly emerging Luftwaffe, taking command as Gruppenkommandeur of the I./Jagdgeschwader 131 (JG 131) — later renamed to I./Jagdgeschwader 1 (JG 1) — on 1 April 1937. With this unit he participated in the invasion of Poland in 1939. He surrender command of the Gruppe on 1 February 1940 and was transferred to the Reichsluftfahrtministerium. He briefly led Jagdgeschwader 27 (JG 27) on the Channel Front from 11 October to 22 October 1940 before he was made Geschwaderkommodore of Jagdgeschwader 77 (JG 77). Under this command, JG 77 participated in the Balkans Campaign and invasion of Crete. JG 77 claimed 50 aerial victories. Woldenga received the Knight's Cross of the Iron Cross. He commanded of JG 27 on 21 June 1941 during the invasion of the Soviet Union and claimed 4 aerial victories. He relocated the Geschwaderstab to North Africa in December 1941. He was appointed Fliegerführer Balkan on 10 June 1942. His last service position of the war was commander of the Luftkriegschule 10 in Fürstenwalde near Berlin. He is credited with three aerial victories of which two were claimed on the Eastern Front.
 Links: a. Knight's Cross of the Iron Cross b. Fürstenwalde c. Fürstenwalde d. Jagdgeschwader 77
[EX A]:
a