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.The birds successfully breed and spread across the island.Several decades later,another flock of birds of the same species also becomes stranded on the island.The new arrivals are slightly larger than the rest of the birds,but they freely interbreed with the rest of the birds,and they produce fertile offspring.Which one of the following processes is best illustrated in this example?

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