Which guideline emphasizes knowing which information you need?

• A. Guess what you might need
• B. Gather everything regardless
• C. Wait for someone to tell you
• D. Know which info you need

Answer: (D)

Knowing which information you need keeps your investigation focused from the start. It sets a clear scope and guides what questions you’ll ask, which sources you’ll check, and what documents you’ll search for. When you define the exact information that will answer your objective, you avoid wandering into irrelevant data and you allocate your time and resources efficiently.

Without this focus, you risk gathering whatever might seem related, which quickly leads to an overwhelming pile of data and the chance of missing the crucial pieces. Waiting for someone to tell you what to collect or trying to guess what you might need invites delays and mistakes, while gathering everything regardless wastes energy on information that won’t help resolve the case.

In practical terms, start with the objective of the inquiry, then determine the specific facts, records, and sources needed to establish the truth. For example, if you’re assessing an alibi, you know you need precise timing, locations, witnesses, and corroborating records instead of collecting unrelated background material. That targeted approach makes the investigation more efficient, reliable, and responsive to the question at hand.