Who among the following served the shortest tenure as the Prime Minister of India?

Correct option is C

The correct answer is (c) Chandra Shekhar.
 Chandra Shekhar served as the Prime Minister of India for the shortest tenure. He was in office from November 10, 1990, to June 21, 1991, for a total of approximately 7 months.
 His government was a minority one, supported by the Congress party from outside, which withdrew its support, leading to his resignation.
Information Booster
HD Deva Gowda:
 Served as Prime Minister from June 1, 1996, to April 21, 1997.
 His tenure lasted about 11 months.
VP Singh:
 Served as Prime Minister from December 2, 1989, to November 10, 1990.
 His tenure lasted nearly 11 months.
IK Gujral:
 Served as Prime Minister from April 21, 1997, to March 19, 1998.
 His tenure lasted about 11 months.