Answer:
The correct answer is stabilizing selection.
Explanation:
In case if the dark-furred seals, that is, the dark fur as the common phenotype are preferred from the natural seal populations, it shows the effect of stabilizing selection. A kind of natural selection, which encourages the mean values over the extreme ones is known as a stabilizing selection. It is in contrast to the disruptive selection, in which both the extreme values are favored.