There are choices for this question namely:
A) genetic bottleneck.
B) sexual selection.
C) habitat differentiation.
D) founder effect.
The correct answer is founder effect. The definition of founder effect is the loss of genetic variation when a new population is established in a small number of individuals from a larger population. The larger population in the context is the ecosystem in Hawaii before it rose from the sea surface. After it rose above the sea surface, most organisms will not be able to survive in land but there will be a small population that can evolve from there.