Final answer:
The subject of this question is Computers and Technology, and it pertains to the use of checklists by operators and crewmembers in the airline industry. Checklists are used for preflight checks and during flight to ensure safety. Operators may rely on memory for checks in certain situations.
Step-by-step explanation:
The subject of this question is Computers and Technology. The question pertains to the use of checklists by operators and crewmembers in the airline industry. Checklists are used for preflight checks, before leaving the aircraft, and while airborne. They help ensure that required checks are completed for safety purposes. However, in certain situations where time is limited or using the checklist would jeopardize safety, operators may rely on their memory to perform the required checks.