The Bell-Shaped Curve at the Top of the Figure Below

Multiple Choice

The bell-shaped curve at the top of the figure below shows the distribution of a phenotype in a population at the start of an experiment. The three graphs (lettered A-C) beneath predict what the distribution will look like if a certain type of selection occurs. Which graph represents what the phenotypic distribution will look like if the population undergoes stabilizing selection?

A) Graph A
B) Graph B
C) Graph C
D) These graphs all show natural selection, but none show stabilizing selection.