What is the minimum visibility requirement for a Special VFR flight?

For a Special VFR (SVFR) flight, the minimum visibility requirement is indeed 1 statute mile. This allows pilots to operate in controlled airspace even when the weather conditions do not meet the standard visual flight rules (VFR) criteria.

The requirement for a minimum visibility of 1 statute mile is established to ensure that pilots have sufficient visual reference to navigate safely and maintain separation from obstacles, other aircraft, and the ground. This lower visibility requirement acknowledges that under certain circumstances, such as when flying near an airport or in familiar terrain, pilots can operate safely with limited visibility as long as they remain clear of clouds.

In contrast, the other options reflect higher visibility requirements that align more closely with standard VFR criteria, which would not typically apply to a Special VFR situation. Such VFR conditions generally require a minimum visibility of 3 statute miles for Class D airspace and 5 statute miles for Class B airspace, making 1 statute mile the most suitable and correct choice for Special VFR operations.