a leg muscle relaxing after exercise a bacterial population in the bloodstream several viral particles on the skin carbohydrates being digested in the stomach
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which factor will most likely cause a person to develop a fever?
Possibilities:
- a leg muscle relaxing after exercise
- a bacterial population in the bloodstream
- several viral particles on the skin
- carbohydrates being digested in the stomach

a bacterial population in the bloodstream