Which of the following questions is probably NOT acceptable when interviewing a witness?

The reason the question regarding the girl with blue hair stealing the purse is likely not acceptable in a witness interview is that it suggests a specific detail that may not have been established or confirmed by the witness. Leading questions, which prompt or suggest a particular response, can influence the witness's memory or perception of events, potentially leading to inaccuracies in their testimony.

In contrast, the other questions are open-ended or factual, allowing the witness to share their observations without leading them toward a specific answer. Asking if they witnessed the event ensures they're being engaged regarding their experience. A request to describe the suspect allows the witness to provide their own account of what they saw, ensuring the information is based solely on their perception. Inquiring about the time of the incident requests a factual detail that does not influence the witness's response.

Overall, it is crucial to keep questions neutral and non-suggestive during interviews to gather reliable and unbiased information from witnesses.