Explanation:

- Enforcement agencies aim to minimize crime and ensure public safety.

- Advent: Refers to the arrival of something significant. It doesn't fit the context of detecting crime.

- Fervent: Indicates intense passion or enthusiasm. It doesn't relate to crime detection.

- Prevent: Means to stop something from happening. In the context, enforcement agencies stopping crime is accurate.

- Prevent is the most appropriate word here.

- Repent: Means to feel sorry for wrongdoing. It’s unrelated to the activities of enforcement agencies.

- Invent: Relates to creating something for the first time. It doesn’t align with crime detection.