During a VFR flight, what action must a pilot take in case of inclement weather?

In the context of a VFR (Visual Flight Rules) flight, inclement weather can significantly reduce visibility, affect cloud clearance, and result in conditions that pilots are not equipped to handle under VFR regulations. If a pilot encounters poor weather that could potentially compromise the safety of the flight, the prudent action is to divert to an alternate airport.

Diverting to an alternate airport allows the pilot to escape the adverse conditions and land safely, ensuring they are not attempting to continue their flight in an environment where visual references could be lost. This action aligns with safety protocols and regulations that emphasize maintaining visual conditions while flying VFR.

Other actions, such as maintaining current altitude and heading or continuing to the destination under VFR conditions, could put the flight at risk if the weather worsens. Contacting the nearest control tower is an option for seeking assistance; however, it does not directly address the primary issue of safely managing the flight in inclement weather. Therefore, diverting to an alternate airport is the most responsible and safety-conscious decision a pilot can make in this situation.