Read the passage about fish.
Certain fish that live in the deep ocean bottom have eventually developed smaller eyes than fish that live in the upper layers of the ocean.
What would be the most likely reason for the development of these smaller eyes?
a
The members of the fish population no longer needed to use their eyes in the dark, developing smaller eyes over time due to lack of use.
b
The deep ocean is very dark and the smaller eyes helped them to see prey better in that habitat, allowing them to survive to reproduce.
c
A mutation in the genes was passed onto offspring, causing more fish in each generation to inherit the same mutation for small eyes.
d
Maintaining the ability to see in the deep water was wasted energy, so the fish with smaller eyes conserved more energy to produce offspring.
b
The deep ocean is very dark and the smaller eyes helped them to see prey better in that habitat, allowing them to survive to reproduce.