Detailed Instructions: 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.
Problem:Question: How many nations fought in the war that killed Bathurst's father in 1942? Passage:His father having been killed in 1942 while on active duty during World War II, Bathurst succeeded to the family titles on the death of his grandfather, the 7th Earl Bathurst, in 1943. He joined the military in 1948, when he was appointed a Governor of the Royal Agricultural College. Lord Bathurst was commissioned, served in the 10th Royal Hussars and later the Royal Gloucestershire Hussars, and promoted Captain in the Territorials to the local cavalry regiment, the Royal Gloucestershire Hussars. While working on his estate he was made Joint MFH of the Vale of White Horse hunt. He later held political office under Harold Macmillan as a Lord-in-Waiting (government whip in the House of Lords) from 1957 to 1961. The Conservative government recommended him as a Deputy Lieutenant of the county in 1960. Briefly he was promoted a junior minister as Joint Under-Secretary of State for the Home Department from 1961 to 1962. He was a Deputy Lieutenant for Gloucestershire from 1960 to 1986, following which he left politics to run the family estate based around Cirencester Park.
 Links: a. Royal Gloucestershire Hussars b. World War II c. Whip (politics) d. Whip (politics)
Solution:
b