Why is the actual distance not the same even when India's latitudinal and longitudinal extents are nearly similar in degrees?

Correct answer: Because latitudes and longitudes show distance differently on Earth

Degrees of latitude and longitude do not represent distance in exactly the same way. The spacing between two adjacent parallels of latitude is nearly constant, with one degree measuring about 111 kilometres. Meridians of longitude, however, converge toward the poles, so the east-west distance represented by one degree becomes smaller as latitude increases. Mathematically, the length of one degree of longitude is approximately 111 cos φ kilometres, where φ is latitude. Thus equal angular extents can produce different ground distances. Option A expresses this principle. The other options deny longitude or introduce irrelevant claims about seas and mountains.