Final answer:
Ecotourism provides economic incentives to landowners and communities for the conservation of endangered species by generating income through tourism, which encourages proactive habitat protection and species repopulation.
Step-by-step explanation:
The option that gives people an economic incentive to actively assist in repopulating an endangered species is B) Ecotourism. This is because ecotourism involves visiting natural areas which conserves the environment and sustains the well-being of the local people. By attracting tourists who are willing to pay to see endangered species in their natural habitats, landowners and communities receive financial benefits for maintaining these habitats and protecting the species. Governments and organizations may also provide direct incentives, such as payments for landowners who maintain habitats or restrictions to protect endangered species, as part of market-oriented environmental policies.
Economic incentives can be more effective than traditional command-and-control approaches in conservation because they encourage proactive participation by landowners and communities. There is a greater potential for long-term sustainability when people have financial reasons to protect and restore endangered species' populations.