Which preflight inspection item does AC 107-2A specifically tie to operating during civil twilight and at night?

Why: AC 107-2A's preflight inspection checklist lists: "Check that the anti-collision light is functioning (if operating during civil twilight and night)." Anti-collision lighting visible for at least 3 statute miles is one of the two risk-mitigation measures § 107.29 requires for night operations.

• Compass calibration is on the same preflight checklist, but the AC requires it "prior to any flight," not specifically tied to twilight or night operations.
• Checking fuel type and quantity is a general preflight item that applies to every flight, not one the AC singles out for night or civil-twilight operations.