The ranging feature of RADAR is expressed in which units?

The correct answer is based on how radar systems measure distance. The ranging feature of radar typically quantifies how far away an object is from the radar source. This distance is commonly represented in units that are easily comprehensible and practically applicable to a variety of environments, including land and maritime applications. “Yards and feet” are units commonly used in many operational contexts, especially in the United States, where they provide a clear measurement for distances relevant to the radar's range.

In applied practice, yards and feet are often more practical for users who deal with close-range targets or specific applications like vehicles on roads or aircraft within specific altitudes, making them suitable units for radar system readings in certain scenarios.

Other options, while they represent valid distance measurements, may not be as frequently used in radar contexts, especially within the specified operational framework or in regions where metric units are predominant. Therefore, the choice of yards and feet aligns well with common usages found in radar operations in the United States.