Final answer:
The bushmeat trade endangers primates by reducing their populations through hunting, destroying their habitats, and spreading diseases. All these factors contribute collectively to the endangered status of various primate species.
Step-by-step explanation:
The bushmeat trade significantly contributes to the endangered status of primates in various ways. The hunting for bushmeat leads to a direct reduction in primate populations, as these animals are killed for human consumption. Furthermore, the commercialization of bushmeat has led to unsustainable harvest rates that exceed the reproductive capacity of primate species. In addition to overhunting, the habitat of primates is being destroyed due to human activities, reducing the areas in which they can live and breed. Lastly, close contact with primates during hunting and butchering can lead to the spread of diseases between humans and primates, exacerbating their risk of endangerment.
Therefore, the correct answer to how the bushmeat trade contributes to the endangered status of primates is 4) All of the above: by reducing their population through hunting, by destroying their natural habitats, and by spreading diseases among primate populations.