Humans Take Advantage of the Adaptations of Other Organisms Found

Humans take advantage of the adaptations of other organisms found in nature. True or False?

A) False. We are best adapted so there's no reason to look to nature for "improvements."
B) False. We are smart enough to figure out how to get what we need. We don't need to depend on adaptations in nature.
C) False. We don't know what kind of adaptations other organisms use.
D) True. Humans have very few adaptations of our own, so we have to depend on other organisms.
E) True. Many of our drugs and spices come from the chemical defenses of other organisms.