Suppose you want to identify whether an animal you found in the forest is ectotherm or endotherm. Which of the following variables can you use to answer your query? 

• A. Environmental temperature as the dependent variable and body temperature as the independent variable
• B. Environmental temperature as the independent variable and growth as the dependent variable
• C. Environmental temperature as the independent variable and body temperature as the dependent variable
• D. Metabolism rate as the independent variable and environmental temperature as the dependent variable

Answer: (C)