In the study of India's size, what do 8°4'N and 37°6'N clarify?

Correct answer: India's mainland extends in northern latitudes

The governing concept is latitude: it measures angular distance north or south of the Equator. Both 8°4′N and 37°6′N carry the suffix N, so they identify the southern and northern limits of India’s mainland in the Northern Hemisphere. Their difference, about 29°2′, indicates the north–south latitudinal span, although the actual ground distance varies slightly with latitude. Option A is correct because these coordinates describe India’s mainland as lying in northern latitudes. Option B is incorrect because western or eastern longitudes must be marked E or W. Options C and D make unrelated and factually false claims about area and boundaries.