LAC (Line of Actual Control) is an effective border between India and ______.

China

The correct answer is Option (4) → China

The Line of Actual Control (LAC) is the de facto border between India and China. It is not an internationally recognized border but rather a demarcation line that separates the areas under the respective control of both countries. The LAC runs along the Himalayan region and is the result of historical agreements, military standoffs, and diplomatic discussions between India and China.