A Small Flock of Birds Becomes Stranded on an Isolated

Multiple Choice

A small flock of birds becomes stranded on an isolated island during a hurricane.Their population expands across the island,and over a period of several decades,the average beak size in the population becomes smaller,helping the birds eat the smaller seeds and insects found on the island.Which one of the following processes is best illustrated in this example?

A) Genetic drift
B) Extinction
C) Gene flow
D) Natural selection