Which element works with munitions control for flightline support activity?

The line delivery element is specifically responsible for coordinating the delivery of munitions to the flightline for support activities. This role involves ensuring that the necessary munitions are available and in the right quantities to meet operational requirements. The line delivery personnel interact directly with the flightline operations, facilitating the timely and efficient handling of munitions in support of aircraft missions.

Combat plans typically focus on broader operational strategies rather than the logistical execution of munitions delivery. The production section may deal with the manufacturing aspects of munitions but does not engage directly with day-to-day flightline operations. Munitions plans and scheduling, while essential for overall logistics, primarily concentrate on the long-term planning and scheduling aspects, rather than the immediate support activities on the flightline. In contrast, line delivery's direct involvement in munitions distribution makes it the correct answer to the question.