Question

multiple-choice question
what happened in 1977 that resulted in the death of many medium ground finches?
a drought which reduced the seeds which medium ground finches relied on
floods which wiped out all food sources on the island
a new predator that preferred medium ground finches

Explanation:

In 1977, a drought occurred on the Galapagos Islands (where medium ground finches live), which decreased the availability of the seeds they relied on for food. This led to many finches dying due to lack of food. Floods didn't wipe out all food sources, and there was no new predator specifically targeting them at that time.

Answer:

a drought which reduced the seeds which medium ground finches relied on