Final answer:
Pilots must receive a minimum of 10 hours notice before an FDP that begins before and extends into their window of circadian low to ensure they are well-rested and maintain aviation safety standards.
Step-by-step explanation:
When a pilot is assigned a Flight Duty Period (FDP) that will begin before and operate into the pilot's window of circadian low, the pilot must receive a minimum notice of report time. The correct answer to your question is d) 10 hours notice. The window of circadian low typically occurs between 2:00 a.m. and 5:59 a.m. local time, a period when the body is naturally inclined to rest.
Regulations are in place to ensure that pilots are adequately rested before flying, especially when flights are scheduled during this window, hence the requirement for sufficient notice. Ensuring pilots have proper rest helps maintain a high level of safety in aviation.