Which of the following requires a prepublication review?

Prepublication review is a process designed to ensure that any information shared publicly does not compromise sensitive or classified information. Among the options presented, submitting a book to a publisher typically involves content that may have been derived from sensitive information, particularly if the author has any affiliations with government or military organizations.

In many cases, individuals affiliated with these entities are required to have their work reviewed before publication to safeguard against the unauthorized disclosure of protected information. This process helps to vet the content for any potentially sensitive material that should not be made public without proper authorization.

In contrast, the other options listed generally do not require such formal reviews. For instance, sending a memo to coworkers, engaging in a casual team discussion, or even publishing something on social media often does not involve the same level of scrutiny typical of formal publications and thus, may not necessitate a prepublication review depending on the context and content at hand.