Which of the following has the most complex nervous system?\nOptions:\n- (A) animals\n- (B) nerves\n- (C) fur seals\n- (D) humans\n- (E) elephants\n- (F) Jellyfish\n- (G) bears\n- (H) kalenchoes
Step-by-step reasoning:
(F)
Most invertebrates have a more complex nervous system.

Jellyfish and insects are invertebrates.

Jellyfish have a more complex nervous system.

.

So, the answer is (F)