A criminal investigator is working to bring two separate and distinct serial killers to justice— one who preys on prostitutes and another who targets college students. From previous experience, the investigator is led to believe that he has a .50 chance of apprehending the prostitute slayer and a .65 chance of apprehending the student slayer. To calculate the probability that he will capture both killers, you must ________ the two probabilities.
a. Add
b. Subtract
c. Multiply
d. Divide