The answer is B) He makes every effort to solve the case.
C is correct in this situation.
Its A, for example when the author mentions a phenix in the book Fahrenheit 451, it is a symbol of the rebirth of ideas that will soon come, not a literal phoenix.
It was at this farm in Derry, New Hampshire, that Robert Frost wrote "Mending Wall", while he lived here from 1901–1911.