When was the Himachal circle separated from the North-West circle of post offices by the Central Government?

The correct answer is: C. 1986

The Himachal circle was separated from the North-West circle of post offices by the Central Government in 1986. This was done in order to improve the efficiency of the postal services in the region. The Himachal circle now covers the states of Himachal Pradesh, Jammu and Kashmir, and Ladakh.

Option A: 1961 is incorrect because the Himachal circle was not established until 1986.

Option B: 1979 is incorrect because the Himachal circle was not established until 1986.

Option D: 2001 is incorrect because the Himachal circle was not established until 1986.