Which of the following is true of the use of the Link 16 information assurance feature known as double pulse transmissions?

The correct answer emphasizes the primary purpose of double pulse transmissions within the Link 16 system, which is to enhance the robustness of data transmission against jamming. This feature involves sending two pulses of data closely in time to create redundancy. If one pulse gets compromised due to jamming or interference, the second pulse may still be successfully received and processed by the intended recipient. This redundancy is crucial in maintaining communication integrity in contested environments, where jamming is a significant threat.

The other options do not accurately represent the function of double pulse transmissions. For example, the idea that the transmissions would cancel themselves out at the receiver does not hold true, as well as the notion that each pulse occurs on identical frequencies, which overlooks the complexity of how pulses are transmitted and received in practice. Finally, the statement about receiving terminals decoding the information inaccurately suggests a malfunction rather than describing the intended redundancy and protection mechanisms that double pulse transmissions provide. Thus, the chosen answer directly aligns with the operational goal of ensuring reliable communications in the face of potential interference.