What is the latitude of the northern limit of India's mainland?

Correct answer: 37°6′ N

The northern limit of India’s mainland is approximately 37°6′ N latitude, making option B correct. The mainland’s latitudinal extent runs from about 8°4′ N in the south to 37°6′ N in the north. Option C represents the southern limit of the mainland, not the northern one. Option A, 23°30′ N, is the latitude of the Tropic of Cancer, which crosses India and divides it into nearly two parts, but it is not the northern boundary. Option D is associated with the southern extent of some Indian islands rather than the mainland. Latitude indicates distance north or south of the Equator, so the northern limit must be the larger north-latitude value.