What is a line on a map joining places of equal rainfall called?

What is a line on a map joining places of equal rainfall called?
A: Isotherm
B: Isobar
C: Isohyet
D: None of these

An isohyet is a line on a map connecting areas of equal rainfall. This question tests knowledge of cartography in geography exams. It aids climate studies a significant topic for students. Update (as of 2025-09-05)