From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences I spoke to Mary and ...

Answer Details

The correct option is (B) "neither." This is because the sentence indicates that both Mary and Peter did not take the advice given. "Neither" means "not one of two," so it is the most appropriate option. "All" suggests that both Mary and Peter took the advice, "either" implies that one of them took the advice while "each" implies that both of them took the advice, which is not the case in the sentence.