How high can engine exhaust temperatures reach?

Engine exhaust temperatures can vary significantly based on the type of aircraft and various operational factors, but they often reach high levels during and after engine operation. In many commercial aircraft engines, exhaust temperatures can indeed reach up to 700 degrees Fahrenheit during normal operations, which is critical for monitoring the engine's performance and ensuring safety. This temperature range is a standard for many turbofan and turbojet engines, making option C the correct choice.

Higher exhaust temperatures can indicate different issues, such as efficiency and performance but also affect maintenance schedules. Understanding these temperatures is essential for ramp agents to ensure that proper protocols are followed during fueling, maintenance, and loading operations to avoid potential hazards.