What specific fuel requirement is necessary for flight under visual flight rules during daylight hours?

The correct answer pertains to the fuel requirements for visual flight rules (VFR) during daylight hours, which stipulates that a pilot must have enough fuel to reach the first intended landing location and then set aside an additional amount to continue flying for 30 minutes at normal cruising speed. This requirement is rooted in ensuring flight safety by providing an operational buffer for unforeseen circumstances that may arise after reaching the primary destination, such as needing to circle due to traffic delays, weather changes, or other emergencies.

This 30-minute fuel reserve is particularly important since it allows pilots to have an adequate safety margin in the event of unexpected changes in conditions or if an alternate landing becomes necessary. It reflects an understanding of the dynamics at play during a flight, notably during VFR, where pilots rely more on visual references and may need to navigate around obstructions or unfavorable conditions.

Options that suggest a different amount of reserve fuel, like 45 minutes or simply completing the flight to the destination without a specified reserve time, do not adhere to the regulations established for safe VFR operations. Hence, these alternatives do not align with the established guidelines that prioritize a pilot's ability to manage flight safety effectively.