Which vehicle is commonly operated by ramp agents for transporting luggage?

The correct answer is the luggage cart, as it is specifically designed for transporting luggage between the terminal and the aircraft. Luggage carts are typically fitted to hold a significant amount of baggage, ensuring efficiency during the ramp operations. Ramp agents utilize these carts to streamline the process of loading and unloading luggage, which is crucial in maintaining flight schedules and ensuring passenger satisfaction.

In the context of ramp operations, the other vehicles serve different purposes. For example, a fuel truck is used to refuel aircraft, a conveyor belt loader assists in moving baggage between the terminal and the aircraft in a continuous manner, and a pushback tug is responsible for moving the aircraft away from the gate. While all these vehicles play essential roles in flight operations, only the luggage cart is dedicated to the transportation of luggage itself, making it the most suitable choice for this question.