Moles are mammals that live underground and eat worms. The moles are adapted to use their sense of smell to locate their food. Which environmental change would MOST LIKELY allow for an increase in the number of moles born with a better sense of smell?

A.
More rainfall makes the soil harder for digging so the moles need to have a better sense of smell to locate the worms.

B.
Less rainfall causes the worms to come closer to the surface so the moles need to have a better sense of smell to locate the worms.

C.
More rainfall makes the soil easier for digging so the moles need to have a better sense of smell to locate the worms.

D.
Less rainfall causes the worms to burrow further underground so the moles need to have a better sense of smell to locate the worms.