What does the acronym RADAR stand for?

RADAR stands for "Radio Detection and Ranging," which accurately describes the technology and its function. It uses radio waves to detect the presence, distance, and speed of objects. The term reflects the two key aspects of radar operation: "detection" refers to the system's ability to identify objects in the environment, while "ranging" indicates the measurement of distance to those objects. This combination is essential for various applications, including aviation, meteorology, and law enforcement, where understanding the location and movement of targets is crucial.

The other options do not convey the correct terminology or function associated with radar technology. For instance, "Radio Data and Ranging" incorrectly suggests a focus on data rather than detection. "Radar Detection and Response" introduces "response," which is not a fundamental part of what the acronym RADAR conveys. Finally, "Ranging Detection and Assessment" alters the order of the key terms and adds "assessment," which is not a recognized or specific aspect of radar technology. Therefore, the chosen answer correctly encapsulates the essence and purpose of radar systems.