Why does the doctor insist that he must see the girl's throat?

A. He's afraid she has diphtheria.

B. He wants to complete his study, so he can write a paper about his experience.

C. The parents insist the doctor give their daughter a full check-up.

D. He enjoys abusing children.

Hint it's not B (The Use of Force)

Its A because ...

Diphtheria is an infection caused by the bacterium Corynebacterium diphtheriae. Diphtheria causes a thick covering in the back of the throat. It can lead to difficulty breathing, heart failure, paralysis, and even death. CDC recommends vaccines for infants, children, teens and adults to prevent diphtheria.

I think the answer is A