Which type of precision instrument approach allows for landing with no decision height and no runway visual range limitations?

The correct answer refers to CAT IIIC instrument approaches, which are specifically designed to allow for landings without a decision height or runway visual range limitations. This approach category is intended for operations in extremely low visibility conditions and utilizes advanced technologies and systems to ensure a safe landing.

CAT IIIC approaches enable aircraft to land automatically with little or no visual reference to the runway or environment, making it ideal for airports that frequently experience poor visibility. The systems in place for CAT IIIC typically include advanced autopilot capabilities, precise ground-based navigation aids, and designated procedures that facilitate landing operations under these stringent conditions.

In contrast, CAT II approaches generally require a minimum decision height and a specified runway visual range, which limits their use in very low visibility scenarios. CAT IIIB allows for a lower decision height than CAT II, but still requires a minimum runway visual range, which does not meet the criteria mentioned in the question. CAT IIID is not a standard designation in the context of instrument approaches. Therefore, CAT IIIC stands as the clear choice for operations that do not impose such restrictions.