Stabilizing selection is an type of natural selection. Stabilizing selection is the natural selection whereby the population (population mean) of species are stabilized or maintained by reducing the variation in the DNA sequence of the genomes of a population.
The answer is stabilizing selection. This type of natural
selection in which the population mean stabilizes on a particular non-extreme
trait value. This type of natural selection
is the most widely seen in which there are
no drastic changes in traits of the population in long times. Extreme traits of
the population are weeded out hence the subsequent generations of the population
have less diversity than the initial. The illustration below shows this model in relation to the others.