Divergent plate boundaries can create O only earthquakes
O only volcanic islands
O only islands
O volcanic islands, mid-ocean ridges and rift valleys

O volcanic islands, mid-ocean ridges and rift valleys

Explanation:

Divergent plate boundaries form when two tectonic plates move away from each other underneath the Earth's mantle. They sometimes may subduct and turn smaller, causing mid-ocean ridges and sometimes earthquakes. Volcanic islands form when pieces of the plates rise, like Hawaii did.