What action is required if you are cleared to land but unsure about the runway conditions?

Requesting clarification from Air Traffic Control (ATC) is the most appropriate action if you are cleared to land but are unsure about the runway conditions. Safety is the top priority in aviation, and it is crucial to have accurate, up-to-date information before landing. By seeking clarification from ATC, you can gain insights into the current state of the runway, any potential hazards, and this helps to ensure a safe landing.

Other options, while they may seem reasonable, may not address the uncertainty about the runway conditions effectively. Proceeding with caution could lead to an unsafe situation if the runway is not suitable for landing. Diverting to an alternate runway is an option, but it can add complexity and delay, especially if you are unsure of the conditions on the cleared runway. Ignoring the clearance jeopardizes safety and does not resolve the uncertainty regarding runway conditions. Thus, consulting ATC is the most prudent and responsible choice.