During the 1800s, seal hunters preferred dark-furred seals from natural seal populations. what effect would best describe what this did to the remaining seal populations over time?

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.