Stabilizing selection is occurring because the average is favored. Option B
Natural selection that prefers intermediate phenotypes over extreme variants is known as stabilizing selection.
This would show up as a peak or concentration around the average or ideal trait value on a population graph, with diminishing frequencies in both directions as you travel away from the peak. This implies that extreme qualities are chosen against, but people with features close to the norm have a greater fitness.
Missing parts;
Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at
different weights.
Which statement is a valid claim that could be made using the data in the graph?
A) Directional selection is occurring because the graph favors an extreme.
B) Stabilizing selection is occurring because the average is favored.
C) Disruptive selection is occurring because the two extremes are favored.
D) Biodiversity variation is occurring because there is an increase in trait variation.