Question

Evolution of the inner ear of humans can be traced back to the___system of fish

Answer 1

The answer to your question is 
$\boxed {\bf lateral~line}$


$\bf Explanation:$
The lateral line system is found in fish and is used to feel a vibration, movement, and pressure in the water. These senses are derived from the epithelial tissue which reacts to the movement near the fish.

Hope this helps!