Answer:
C.) Selective pressure
Explanation:
Selective pressure is a natural process that occurs in nature in which certain phenotypes are favored in certain environments. When we say these phenotypes are favored, this means individuals with these phenotypes have a better chance at survival and reproduction in particular environments. Certain phenotypes may be beneficial in some environments but harmful in others.
Your answer is B - The eruption is explosive.
A biome is a large naturally occurring community of flora and fauna occupying a major habitat. An example would be a rainforest, a tundra, a forest, etc.