Under what conditions can a Special VFR clearance be granted in Class D airspace?

A Special VFR clearance in Class D airspace allows pilots to operate under specific visual flight rules even when general visibility conditions are not sufficient for standard VFR operations. The requirements for obtaining a Special VFR clearance include having at least 1 mile of visibility and remaining clear of clouds. However, this is distinctly contrasted with the requirements for regular VFR operations where separation from clouds is essential.

The correct understanding of this regulation emphasizes that a pilot must maintain visual reference to the ground and be able to see and avoid obstacles, which aligns with having at least 1 mile visibility and remaining clear of clouds. Thus, option A accurately describes the essential conditions for a Special VFR clearance because these conditions enhance safety by ensuring pilots can navigate visually while still complying with airspace rules.

Other options present conditions that do not align with the regulations for Special VFR in Class D airspace, either by requiring more visibility than necessary or allowing flight through clouds, which does not meet the safety requirements established for such operations.