The correct answer is D) All the above. This is the correct answer because all three statements are true and necessary for safe crane cargo operations: A) Never exceeding the crane manufacturer's safe working load limits is critical to prevent crane overloading and potential equipment failure or collapse during a lift. B) Properly securing cargo in vehicles/containers before lifting is essential to prevent shifting during transport, which could destabilize the load and create a dangerous situation. C) Thoroughly checking all lifting points on equipment prior to a lift is necessary to ensure the load is properly supported and to identify any potential weak points or issues. Following these safety guidelines helps ensure crane cargo operations are conducted in a responsible and controlled manner to protect workers and equipment.