Final answer:
Heterotrophs are organisms that cannot produce their own food and rely on consuming other organisms for energy. Animals including humans are heterotrophs.
Step-by-step explanation:
The correct answer is D. heterotrophs.
Heterotrophs are organisms that cannot produce their own food and rely on consuming other organisms for energy. In contrast, autotrophs are able to produce their own food through processes like photosynthesis or chemosynthesis. While plants, algae, and some bacteria are autotrophs, animals including humans are heterotrophs.
For example, a lion is a heterotroph because it obtains energy by hunting and consuming other animals. Similarly, a human is a heterotroph because we obtain energy by consuming plants or other animals.
Learn more about Heterotrophs