What is redcliff line and what was basis of drawing this line in the map?

Question

On the map, what line connects the places having equal average atmospheric pressure ?
(A) Isobar
(B) Isochrone
(C) Isotherm
(D) Isohalines

Answer 1

The Radcliffe Line was published on 17 August 1947 as a boundary demarcation line between India and Pakistan upon the Partition of India.

Radcliffe Line was drawn up by Sir Cyril Radcliffe, demarcating the boundary between India and Pakistan.