What is the minimum visibility required for a Category 1 approach at a regular airport for a high mins captain?

For a Category 1 approach, the minimum visibility requirement is specifically designed to ensure that pilots have sufficient visual references to safely execute the approach and landing under reported weather conditions. For a high minimums captain, which refers to a captain who has specific restrictions on landing minimums due to limited experience or regulatory requirements, the visibility requirement is lower than that for an unrestricted captain.

In this case, the correct choice of 1/2 statute mile (sm) aligns with the regulatory framework established for Category 1 approaches performed by high mins captains at regular airports. This 1/2 sm visibility minimum is intended to provide an adequate safety margin, allowing pilots to maintain spatial awareness while navigating during the descent and landing phases.

The other options, while they represent visibility criteria, do not meet the specific regulations set forth for a Category 1 approach for a high mins captain. Each of these alternatives presents a visibility requirement that is higher than 1/2 sm, thus not aligning with the rules governing such approaches for pilots who are not allowed to operate with lower visibility thresholds.