PLEASE HELP I WILL BE GIVING THE BRAINLIEST AND 15 POINTS
The woolly mammoth was a relative of elephants that lived in the far north. There is much debate in the scientific community about what caused the extinction of mammoths. Climate models show that changing weather patterns stressed mammoth populations. Hunting by humans may have also reduced populations. The youngest mammoth remains on a continent are 10,000 years old.

Why did natural selection not cause mammoths to evolve new adaptations in response to environmental changes instead of becoming extinct?

A. There were too many offspring in the population.
B. There were too many different traits in the population.
C. There was not enough competition in the population.
D. There was not enough variation in the population.