Which statement best describes how a major change in size of one population affects an ecosystem

If one population, such as lets say a hawk decreases the niche, or the importance of an animal or its effect in the ecosystem, on the mice. the mice population increases. or it can be lets say plants and bugs, the lady bug goes away and the other bugs eat the plant

Biodiversity will be affected. Increase in one population can lead to a decrease in another

The answer is d have a nice day