The correct answer is 'should you?'. This is a tag question. The main clause is 'You should stay'. The tag question should reflect the auxiliary verb 'should' from the main clause. Since the main clause is positive ('You should stay'), the tag question should be negative, but the sentence structure here is a bit tricky. The preceding statement 'You aren't well enough' makes the overall sentiment a suggestion or advice. However, the structure 'You should...' is a statement, and the tag question should mirror the auxiliary verb 'should'. Because the main clause 'You should stay...' is positive, the tag should be negative. The most appropriate negative tag is 'shouldn't you?'. However, considering the options, and that the preceding statement is negative 'You aren't well enough', the question 'should you?' is asking for confirmation of the recommendation. Re-evaluating: The sentence structure is "You should stay...?". The statement part is "You should stay with either me or your son.". The tag question should mirror the auxiliary verb "should". Since the statement is positive, the tag should be negative. Therefore, the correct tag question is "shouldn't you?". However, "shouldn't you?" is not an option. Let's re-examine the premise. The prompt is asking to complete the sentence "You should stay with either me or your son, ...?". This is a request for a tag question. The main part of the sentence is "You should stay...". The auxiliary verb is "should". Since the statement is positive, the tag should be negative. Therefore, "shouldn't you?" is the grammatically correct tag. Given the provided options, there might be an error in the question or options. However, if we have to choose from the options, let's consider the structure. "You should stay..." implies a recommendation. The question is asking for confirmation of this recommendation or advice. Option A: "should you?" - This would be used if the statement was negative, e.g., "You shouldn't stay...". Option B: "shouldn't you?" - This is the grammatically correct negative tag question for a positive statement. Option C: "are you?" - This would be used if the main verb was "to be", e.g., "You are unwell, aren't you?". Given the options, and the common usage for seeking confirmation of advice, "should you?" is sometimes used colloquially, although "shouldn't you?" is technically correct. Let's assume there's a nuance where the question is asking for confirmation that the advice is being followed or considered. In that context, "should you?" could be interpreted as seeking confirmation. However, the most standard grammatical rule points to "shouldn't you?". Since that's not an option, let's consider if the initial clause "You aren't well enough" somehow influences the tag. The structure is "Statement, Tag Question?". The statement is "You should stay with either me or your son." The auxiliary verb is 'should'. The statement is positive. Therefore, the tag should be negative. If we strictly follow the rules, none of the options are perfectly correct if "shouldn't you?" is not available. However, if we consider the options, and the context of seeking confirmation of advice, "should you?" is the closest option that maintains the auxiliary verb from the main clause, even though the polarity is reversed. Let's assume the question is asking for confirmation that this is the right course of action. In that case, "should you?" could be interpreted as "Is this what you should do?". This is a stretch. Let's reconsider the standard rule: Positive statement -> Negative tag. Negative statement -> Positive tag. The statement is "You should stay...". This is positive. So the tag should be negative. The options are: A. should you? B. shouldn't you? C. are you? Option B is the correct negative tag. Since Option B is available, it should be the correct answer. Let's verify the OCR for option B. Yes, it is 'shouldn't you?'. Therefore, option B is the correct answer.