Final answer:
Hybrids with lower fitness than their parents result in reinforcement, which is the process where the speciation between parent species is reinforced due to the decreased reproduction of the unfit hybrids. correct option is A
Step-by-step explanation:
Hybrids that have lower fitness than parent species and undergo secondary contact will experience reinforcement. This process refers to the scenario where ongoing hybridization results in hybrids that are less fit than their parents. As a result, the less fit hybrids reproduce less over time, which leads to a decrease in hybrid offspring and reinforces the speciation process that initially separated the two parent species. This divergence continues until hybridization no longer occurs. The term reinforcement is used because the low success of hybrids strengthens the reproductive barriers between the parent species, thus reinforcing the existing speciation.