Which of the following is an example of a consumer?

A consumer is an organism that obtains its food by feeding on other organisms, which can include plants or other animals. In this case, humans are classified as consumers because they rely on various sources of food, including plants and animals, to meet their nutritional needs. This characteristic distinguishes them from producers, such as grass and trees, which create their own energy through the process of photosynthesis, and from algae, which also serve as producers in many ecosystems.

Understanding the role of consumers in an ecosystem is essential, as they play a critical role in the food chain by helping to transfer energy from producers to higher trophic levels. The consumption of different organisms allows for a balance within ecosystems and contributes to biodiversity.