Records provide clues to mistakes made in the investigation. Records prove the investigation was conducted many times. Records rule out the need to repeat the investigation. Records make the results from the investigation accurate.
I gave my students this multiple choice question: How can investigation records be most helpful?

Only one answer is correct among these 4 choices:
- Records provide clues to mistakes made in the investigation.
- Records prove the investigation was conducted many times.
- Records rule out the need to repeat the investigation.
- Records make the results from the investigation accurate.

Could you tell me which one is correct?

Records provide clues to mistakes made in the investigation.