The answer is A, ( Aversion therapy) is a type of behavior therapy designed to make a patient give up an undesirable habit by causing them to associate it with an unpleasant effect.
This is the only answer that comes close to match your question. Hope this helps!
Book is suggesting a diet while the other is suggesting the type of diet I think they both help each other out (sorry if I’m wrong)
The answer is C. The name itself means not able to be transmitted
