Question

natural selection
favors postzygotic barrier development.
can indirectly favor postzygotic barrier development.
has no effect on barriers to reproduction.
can indirectly favor prezygotic barrier development through reinforcement.
directly favors the development of prezygotic barriers.

Explanation:

Natural selection can indirectly favor prezygotic barrier development through reinforcement. Reinforcement occurs when hybrid offspring have low fitness. This leads to selection against inter - breeding and promotes prezygotic barriers (like behavioral or temporal isolation) to prevent the formation of low - fitness hybrids.

Answer:

can indirectly favor prezygotic barrier development through reinforcement.