Respuesta :
The correct answer is - option A. It drastically reduced the gene pool of the species.
Explanation:
A population bottleneck is a process that definitely decreases the size of a population. The bottleneck might be brought about by different occasions, for example, an ecological disaster, the hunting of animal groups to the point of elimination or extinction, or territory obliteration that outcomes in the deaths of creatures.
Bottleneck occasions are named because of the extraordinary loss of genetic diversity. In spite of the fact that this can now and then bamboozle because of certain species colossal contrasts between the genuine populace and compelling populace.