Ethologists study how animals behave in animals'\nOptions:\n- (A) Summer\n- (B) state\n- (C) Birds\n- (D) life\n- (E) seasons\n- (F) health\n- (G) homes\n- (H) fields
Let's think step by step below.
(G)
Ethologists usually study how animals behave in their natural environment.

Environments are animals homes.

Ethologists usually study how animals behave in the animals' homes.

.

So, the final answer is (G)