Concept:Isohyets are lines drawn on maps to join places that receive the same amount of rainfall.
Explanation:In geography, lines joining points of equal value are called isolines.
When the isoline connects points with equal rainfall, it is specifically called an isohyet.
The prefix "iso-" means equal, and "hyetos" refers to rain.
Other similar lines have different meanings:
Isotherm joins points of equal temperature.
Isobar joins points of equal atmospheric pressure.
Isopach joins points of equal thickness in a rock layer.
Since the question asks about equal rainfall, the correct term is isohyet.
Answer:C. isohyet