"The degree of accuracy to which RADAR can measure range" is the definition of which of the following terms?

The correct term that corresponds to "the degree of accuracy to which RADAR can measure range" is indeed Range Resolution. Range Resolution specifically refers to the ability of a radar system to distinguish between two targets that are close to each other in range. It is critical in determining how accurately the radar can measure the distance to a target.

In the context of radar systems, range resolution is often influenced by the pulse width; shorter pulses can resolve objects that are closer together, while longer pulses may not be able to differentiate between them. This capability is vital for operations where precision is required, such as in tracking multiple objects or identifying targets in a dense environment.

Other options provided do have relevance to radar systems but focus on different aspects. Maximum Unambiguous Range refers to the farthest distance at which a target can be detected without the risk of range ambiguity. Maximum Detection Range pertains to the longest distance at which a radar can detect a target reliably, regardless of other factors affecting resolution. Range Definition is not a commonly utilized term in radar terminology compared to Range Resolution, which directly addresses the measurement accuracy of range in question. Thus, the most accurate match for the definition provided in the question is Range Resolution.