Answer :
Rhinoceroses being poached at a rate of two or three a week in Africa and Asia leads to the loss of genetic diversity. Low genetic diversity can make it hard for the species to survive.
The correct answer is option (b). genetic diversity.
The extreme poaching of the Rhinoceroses would result in decrease in their number. As the number of the Rhinoceroses would decrease, the chances of the mating between closely related individuals may increased. The mating of the closely related individuals increase the changes of the homozygosity.
As a result of the homozygosity, the future progeny obtained would have more similar traits to that of their parents, as recombination would not result in variations. Hence, it would result in the decreased genetic variation.