What is the purpose of a 'drop zone' or landing area, and how should it be maintained?

• A. Do not use a drop zone; the area is optional.
• B. A drop zone should be cleared of debris only periodically.
• C. The landing area should be kept cluttered to prevent hard landings.
• D. Provide a clear, padded or safe landing area; maintain by removing debris, ensuring surface integrity, and keeping the area clear of hazards.

Answer: (D)