In Class E airspace below 10,000 feet MSL, what are the cloud clearance requirements?

In Class E airspace below 10,000 feet MSL, the cloud clearance requirements ensure that pilots maintain safe separation from clouds to avoid collisions and enhance visibility. The regulations stipulate that pilots must remain 1,000 feet above the clouds, 500 feet below the clouds, and 2,000 feet horizontally clear of them. This set of requirements is designed to provide adequate separation from clouds, maintaining a safe flight level and sufficient visibility for effective navigation and obstacle avoidance.

By fulfilling all these criteria, pilots can operate within this airspace while adhering to safety standards and regulations. This comprehensive approach to cloud clearance is essential, as it considers vertical and horizontal distances to ensure a broader margin of safety in varying weather conditions. Therefore, all these requirements being applicable contributes to the correct answer being that all of the stated cloud clearance conditions must be met.