What type of entries should be marked with L.E. in a notebook?

The correct answer is that entries marked with L.E. in a notebook refer to legal enforcement entries. These types of entries are significant within the context of a park warden's duties, as they indicate actions taken that may have legal implications, such as recording incidents of wildlife violations, documenting interactions with the public regarding laws and regulations, or noting observations pertinent to legal enforcement actions that may arise.

Legal enforcement entries are essential for maintaining accurate records that might support investigations or prosecutions if necessary. Such documentation is crucial for ensuring accountability and can serve as evidence in a court of law if disputes arise over enforcement actions. Therefore, marking entries with L.E. clearly signifies their importance in relation to legal responsibilities and records.

The other entries, while potentially relevant in different contexts, do not carry the same legal weight and implications as legal enforcement entries, which is why they are not marked with L.E.