What is a question that cannot be answered by the scientific method?

Answer 1

Does God exist? this question is subjective (opinion) and is down to someones individual thoughts

I would agree that science cannot answer this question at this time but that does not mean it is subjective. There are cases in which this is subjective (e.g. when God is defined as an idea as opposed to a non-mental entity) but there are also cases in which this is objective (e.g. when God is defined as Lord Zeus, a celestial entity physically extant and sitting upon the top of Mount Olympus.)

The reason the scientific method cannot answer this question is that in the absence of any conclusive empirical evidence (either via experience or experiment) science cannot say anything conclusive about a topic. Using the scientific method it is usually quite hard to say anything about 'hidden' entities which our senses and tools cannot interact with. The absence of evidence is not evidence of absence.

Answer 2

All questions should be answered while been investigated. The questions will help the police know more.