Caffeine can cause \nOptions:\n- (A) congestion\n- (B) anemia\n- (C) constipation\n- (D) sweating\n- (E) hives\n- (F) energy usage\n- (G) dehydration\n- (H) heat energy
Let's think step by step.
(G)
Caffeine is a central nervous system stimulant.

Stimulants can cause overheating and dehydration.

Caffeine can cause dehydration.

.

So, the final answer is (G)