Which is the correct definition of review for the following:
Closed-Circuit Television Cameras for added passenger security and review after a crime.
1. An examination of something, with the intention of changing it if necessary.
2. A report in a newspaper or magazine, or on the Internet, television or radio, in which somebody gives their opinion of a book, play, film/movie, etc; the act of writing this kind of report.
3. A report on a subject or on a series of events.
4. A ceremony that involves an official inspection of soldiers, etc. by an important visitor.
Thanks so much.