How to punctuate an answer to a question when the answer is also a question?

Question

The title to this question is sort of long-winded but the example here should clarify it.

Which of these is correct?

1. Who should be baby-sitting your children, your neighborhood teenagers or professionally trained people?
2. Who should be baby-sitting your children? Your neighborhood teenagers or professionally trained people?
3. Who should be baby-sitting your children? Your neighborhood teenagers? Or, professionally trained people?

I think option 1 is definitely wrong. Option 2 or 3 could both work but I am not sure.

Answer 1

Sentences 2 and 3 are correct, albeit informal. You can fix sentence 1 by replacing the first comma with a colon, making it perfectly correct and formal:

Who should be baby-sitting your children: your neighborhood teenagers or professionally trained people?

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If you are curious as to why this is correct, simply replace the interrogative pronoun, who, with the noun of your choice. You should have the same correct punctuation:

Either of these/the following should be baby-sitting your children: your neighborhood teenagers or professionally trained people.

When in doubt as to how to punctuate a question, try to convert it to the non-interrogative form and punctuate accordingly. Questions are sentences in their own right, and thus should follow the same rules of punctuation as statements, except for the question mark at the end.

Answer 2

3 is pushy, you would want to be wary of being pushy with the topic of other people's children or decisions. 2 is often used as a debate starter. If you want to gently make the point to someone you'd want to reword the whole thing, suggestively and passively.

Answer 3

Actually, I would say 2 and 3 are both wrong since the second 'sentence' in each isn't really a sentence at all. Number one is perfectly understandable as it is.