What does a diaphragm help a dolphin do?\nOptions:\n- (A) swimming\n- (B) rest\n- (C) stay warm\n- (D) smell\n- (E) see\n- (F) breathe\n- (G) eat\n- (H) survive
Let's be accurate as possible and think first.
(F)
Mammals breathe with the help of a diaphragm.

Common dolphins are mammals.

Dolphins breathe with the help of a diaphragm.

.

Therefore, the answer is (F)