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I beg your pardon? I don't think I understand the question. I will try: As at the big bang, time and space are not really defined, there is no answer to that question :)

Then the answer is given above: there is no defined "before the big bang" moment as time is only defined from the big bang.

Same answer as before: space is not only defined from the big-bang. The question cannot therefore be answered. In fact, the theory breaks down at the moment of he big bang (we go a singularity), which just means we should replace the theory by another one we have not found yet.

Again, I am afraid I can't give any answer.