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.

[Q]: Question: Who did Bruce Herschenohn run against in his primary? Passage:In 1992 four-term incumbent Democratic Senator Alan Cranston retired, creating an open seat contest. In what was billed as the "Year of the Woman", Boxer beat fellow Rep. Mel Levine and Lieutenant Governor Leo McCarthy in the Democratic primary, winning 44% of the vote. In the general election, Boxer defeated Republican Bruce Herschensohn, a conservative television political commentator from Los Angeles, by 4.9%. A last-minute revelation that Herschensohn had attended a strip club at least partially affected the outcome. In 1998, she won a second term, beating sitting California State Treasurer Matt Fong by 10.1% of the vote. After facing no primary opposition in the 2004 election, Boxer defeated GOP candidate Bill Jones, the former California Secretary of State, by 20%. In 2010, Boxer defeated GOP candidate Carly Fiorina, former chief executive officer of Hewlett-Packard, by 10%.
Links: a. 1992 United States Senate election in California b. Bruce Herschensohn c. Bill Jones (California politician) d. Leo T. McCarthy
[A]: b

[Q]: Question: How long had Shumilov been in the military when the Soviet invaded Poland? Passage:Colonel (promoted to Major General 4 June 1940) Mikhail Shumilov took command in April 1938. In September 1939, the corps fought in the Soviet invasion of Poland as part of the 10th Army. It included the 6th, 33rd, and the 121st Rifle Divisions at the beginning of the invasion on 17 September. By 2 October, these divisions had transferred to other units, and it included the 29th, 64th, and 145th Rifle Divisions instead. The corps headquarters relocated to Grodno in November and became part of the 11th Army. Between June and July 1940 it was briefly headquartered at Kovno before moving to Siauliai in August, part of the Baltic Special Military District. The 11th transferred to the 8th Army in October, and included the 11th and 125th Rifle Divisions by the outbreak of the war. It defended a 40-kilometer sector on the left flank of the 8th Army, with its headquarters in the forests northwest of Skaudvile. The 125th Rifle Division was in the corps' first echelon, holding covering the highway and railroad from Tilsit to Siauliai. The 48th Rifle Division (part of the adjacent 10th Rifle Corps), after moving forward from Riga, was to take up positions on the left of the 125th. The corps' 73rd Corps Artillery Regiment included four battalions of 107 mm guns.
Links: a. Mikhail Shumilov b. 11th Rifle Division c. 10th Rifle Corps d. Baltic Military District
[A]: a

[Q]: Question: Which spacecraft out of the Kepler, Hershel and Planck spacecrafts was the most expensive to build? Passage:Although no planetary probes were launched in 2009, four astronomical observatories were placed into orbit. The Kepler spacecraft, which was launched by a Delta II on 7 March, entered an Earth-trailing heliocentric orbit from where it will search for exoplanets. On 14 May, and Ariane 5ECA launched the Herschel and Planck spacecraft. Both were placed at the L Lagrangian point between the Earth and Sun, from where they will be used for astronomy. Herschel carries an infrared telescope whilst Planck carries an optical one. The fourth observatory to be launched was the Wide-field Infrared Survey Explorer, or WISE, which is a replacement for the Wide Field Infrared Explorer which failed shortly after launch. WISE was launched into a sun-synchronous orbit by a Delta II on 14 December, and will be used for infrared astronomy. Repairs made to the Hubble Space Telescope during STS-125 restored it to full operations after a series of malfunctions in 2008.
Links: a. Wide-field Infrared Survey Explorer b. Heliocentric orbit c. Lagrangian point d. Kepler space telescope
[A]:
d