What are the minimum VFR weather requirements in a Class E control zone without an operational FSS?

The correct answer outlines the minimum VFR (Visual Flight Rules) weather requirements in a Class E control zone when there is no operational Flight Service Station (FSS). Under these conditions, the regulations specify that pilots must maintain a visibility of at least 3 statute miles and have a ceiling of at least 1000 feet above ground level (AGL). This provides pilots with adequate visibility to see and avoid other aircraft, as well as sufficient vertical clearance from obstacles and terrain.

Visibility of three miles allows pilots to visually identify potential hazards and navigate safely, while a minimum ceiling of 1000 feet AGL ensures that they can maintain safe separation from the ground and any obstacles. This regulation is designed to enhance safety during flight operations in less controlled airspace.

The other options do not meet the established safety standards for VFR operations in a Class E control zone. Specifically, lower visibility or cloud cover that does not provide sufficient vertical clearance could compromise a pilot's ability to navigate and avoid collisions, thus making those responses inadequate for this scenario.