Hi Excuse me but you don't have the essay in your question, so how do you expect anybody to answer your question? In the future please include all of the necessary materials so everyone can properly answer your question. Thanks.
C should be the correct answer for this question.
Answer:
The second apparition tells Macbeth that no one born from a woman will be able to kill him. Macduff will be able to kill him though because he was “surgically removed” (born by C-section)