Do correct me if I'm wrong, but I learnt that the main stress of the sentence when you're answering a question is on the part that is actually the answer. So the bolded words above are the parts of the sentence that are phonetically stressed because it is the actual answer of the question.
My question is whether that there is any main phonetic stress in the questions themselves. Would the stress be on the question word itself since it is the part that is actually asking?
Or is it possible for other parts of the sentence to be stressed instead? 他最喜欢谁？ 他最喜欢谁？ 每个人买了什么？ 每个人买了什么？
Or is there no stress in the sentence at all? Just 他最喜欢谁? 每个人买了什么？