Which statement about a no-entry zone is true?

• A. A no-entry zone is a casual term for a restricted area.
• B. A no-entry zone is only used during maintenance.
• C. A no-entry zone is an area where entry is unrestricted.
• D. A no-entry zone is a designated area with restricted or prohibited access to protect personnel from hazards, including during egress operations.

Answer: (D)