The correct answer is: B. neither of us
The sentence “We’re lost. Neither of us knows where we are.” is a statement about the speaker and the listener. It is saying that neither the speaker nor the listener knows where they are. This is consistent with the meaning of the word “neither,” which means “not either.”
The other options are incorrect because they do not accurately reflect the meaning of the sentence. Option A, “either of us,” means “one or the other of us.” This is not consistent with the sentence, which is saying that neither the speaker nor the listener knows where they are. Option C, “not any of us,” means “none of us.” This is also not consistent with the sentence, which is saying that neither the speaker nor the listener knows where they are. Option D, “none of these,” is incorrect because it is not one of the options listed in the question.