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 were Himmatisinhji's responsibilities in the position he held just before becoming Deputy Minister of Defence? Passage:After a brief period in the diplomatic service, Himmatsinhji returned to the army, seeing service in the Second World War. A war-substantive lieutenant-colonel at the war's end, he eventually reached the rank of major-general. He was appointed a Companion of the Order of the Indian Empire (CIE) in the 1946 New Year Honours. He was elected to the Central Legislative Assembly, India's pre-independence lower house, in 1946, and was later a member of the Constituent Assembly, the transitional body established after independence. A member of the Indian National Congress, he was a party whip before being appointed Deputy Minister of Defence in Jawaharlal Nehru's first ministry. In this position he chaired a committee responsible for recommended improvements to India's defences along its border with what was then the Kingdom of Tibet, prior to China's invasion and eventually annexation. Upon retirement, Himmatsinhji was appointed the first lieutenant-governor of Himachal Pradesh, a newly created Part C state of India. He served in the position from 1952 to 1954, when he was succeeded by Bajrang Bahadur Singh. Himmatsinhji died in January 1973.
Links: a. Whip (politics) b. Indian National Congress c. Bajrang Bahadur Singh d. Indian National Congress
a