Question

After which event could you say with most certainty that evolution has occurred? (Points : 3)
One animal grows abnormally large.
An allele frequency changes in a population.
A new predator comes into an environment.
A white-eyed fly is born into a population of brown-eyed flies.

Answer 1

@Southernbelle730

Answer 2

Evolution deals with populations and not individuals, on that basis alone can infer that the answer is b.

Answer 3

thanks @aaronq