What can be said about an intrinsic standard?

An intrinsic standard is fundamentally designed to provide a reference point for measuring a specific unit without needing external validation or calibration. This type of standard embodies the properties it is meant to measure, which is why it can, when operated properly, accurately realize or verify the unit it represents.

For instance, if the intrinsic standard is a length measure, it possesses the precise characteristics of that length and can be trusted to yield accurate measurements of that physical quantity. This capability sets intrinsic standards apart from others that may need additional external sources for calibration and validation of their measurements.

The other options do not align with the definition of intrinsic standards. For instance, if an intrinsic standard were to claim it cannot be operated properly or that it is inaccurate, it would fundamentally undermine its purpose as a reliable reference. Therefore, the assertion that it will realize the unit when operated properly captures the critical function of intrinsic standards effectively.