Final answer:
During a pre-trip inspection, the fan belt and seat belt should be checked for proper function and safety concerns. Transmission and timing belts are not typically included in a basic pre-trip inspection.
Step-by-step explanation:
The belts you should check during a pre-trip inspection are primarily those that are essential for vehicle safety and operation. While transmission and timing belts are crucial components of a vehicle's engine system, they are usually not checked during a basic pre-trip inspection due to their location and the difficulty of accessing them without disassembling parts of the engine.
The fan belt (alternatively known as the serpentine belt) is typically checked because it is easily accessible and its failure can lead to overheating of the engine and a breakdown. The seat belt is also essential to check for safety reasons to ensure it is functioning properly. Therefore, the correct answers are B) Fan Belt and C) Seat Belt.