Which Structure in a Shark is Closest in Function to a Swim

Question

Which structure in a shark is closest in function to a swim bladder in a ray-finned fish?
A) its lateral line system
B) its spiral valve
C) its liver
D) its gills

Accepted Answer

Sharks do not have a swim bladder like ray-finned fish, which use it for buoyancy. Instead, sharks rely on their large, oil-filled liver to help them maintain buoyancy in the water.