9. Which of the following is the most likely reason that subjects infected with gametocytes were tested both before and after their infections were cured?
Your Answer is
Correct Answer is A
Explanation
The same group of people, as for the test before and after, the main purpose is to eliminate interference, so that it is convenient to determine that the mosquitoes are attracted to the gametocyte infection, not because of other personal reasons of these subjects.