From 1952-1971, the State of Himachal Pradesh was governed by

The correct answer is A. Lt. Governor.

Himachal Pradesh was a union territory from 1952 to 1971. During this time, it was governed by a Lt. Governor, who was appointed by the President of India. The Lt. Governor was the head of the state and had the power to make laws, appoint the chief minister and other ministers, and dissolve the legislative assembly.

The other options are incorrect. Option B is incorrect because the Governor is the head of a state, not a union territory. Option C is incorrect because the President of India is the head of state, not the head of a state or union territory. Option D is incorrect because the Army is not a government body.