Final answer:
The VFR fuel reserves during the day are referred to as day reserves, while the VFR fuel reserves at night are called night reserves. Pilots are required to carry enough fuel to complete their planned flight, plus have a specific fuel reserve to ensure safety.
Step-by-step explanation:
The VFR fuel reserves during the day are referred to as day reserves, while the VFR fuel reserves at night are called night reserves. Therefore, the correct answer is B) Night Reserves.
During the day, pilots are required to carry enough fuel to complete their planned flight, plus have a 30-minute fuel reserve. At night, pilots need to have enough fuel to complete their planned flight, plus have a 45-minute fuel reserve. These reserves are in place to ensure that the pilot has enough fuel to safely reach an alternate airport in case of an emergency or unexpected changes in flight conditions.
To summarize, during the day, pilots are required to carry day reserves, while at night, they need to have night reserves. Both are essential for flight safety.