Tropical rainforests have high species richness of trees. provide the most reasonable explanation why animal species richness is also high in tropical rainforests?

Here, is the question with the explanations to pick from to complete the question

Tropical rainforests have high species richness of trees. Which of the following statements provides the MOST reasonable explanation why animal species richness is also high in tropical rainforests?

Animals are unable to adapt to climate variability in higher latitudes.

Animals have had the same amount of time to evolve in rainforest areas as trees.

Animal diversification rates are higher than those of trees.

Animals have diversified into the vast number of niches provided by tree diversity

The last option is the most reasonable one

Our answer is:

Animals have diversified into the vast number of niches provided by tree

Explanation:

The reason is that a lot of species are highly specialized to occupy a particular niche. Where that favourable niche exists, the population of that species increases as its offspring colonize new areas.

correct answer is a. and d.