This area is well known for plentiful rain.

Answer: Option C

Plentiful : existing in or yielding great quantities; abundant.
Poor : lacking sufficient money to live at a standard considered comfortable or normal in a society.
Impoverished : (of a person or area) made poor.
Scarce : (especially of food, money, or some other resource) insufficient for the demand.
Miserly : of or characteristic of a miser.

Antonym of Plentiful is Scarce