Answer should be A) because its recent so it means that's its up to date and not outdated and its about NEW control methods so it matches up, its not B) because that's illnesses not methods, not C) because that's not methods, and not D) because that's not even a method.
The answer is: C. tragicomedy.
A tragicomedy is a play or novel which contains essential features of both tragedy and comedy. As a consequence, the author could write about amusing and comic aspects of a distant country, as well as about events that have been disastrous and have caused great suffering.
Because the floods and river banks attract wild life such a edible plants and fish for then to eat.
I believe that the answer is c. but it could be d.