A living thing is an ______.

• A. Habitat
• B. Abiotic factor
• C. Organism
• D. Biotic factor

Answer: (C)

The main idea is naming what a living thing is in biology. A living thing is an organism, because organisms are individual living beings that carry out life processes such as metabolism, growth, reproduction, and response to stimuli. The word describes the actual living entity, not its surroundings. Habitat is the place where an organism lives. Abiotic factors are the non-living parts of the environment, like temperature or minerals. Biotic factors are the living components of the environment, such as plants and animals, that interact with organisms. So, when asked what a living thing is, organism is the best fit because it names the actual living individual rather than its environment or the elements around it.