The correct answer is B) The body temperature will increase.
Bob has a viral infection. The most likely first line of defense in his body is "The body temperature will increase."
You have to pay attention to your body's signals. If you have an infection, the body tries to communicate with you via fever so you can take any action such as going to the medical doctor. Other general symptoms of infection could be nausea, fatigue, headache, and swollen lymph nodes. So always listen to what your body has to say because it is smart and wants you to prevent or solve any health issues.
A variable that is not dependent, e.g. when inserting soap into water to test its surface tension, the independent is soap. It is the change that is controlled in the experiment.
