The correct answer is 150 metres. In British Columbia, visibility of at least 150 meters in each direction is required to perform a U-turn safely. This ensures that the driver can see any oncoming traffic from a sufficient distance to make a safe and informed decision about whether to proceed with the U-turn. It helps prevent potential collisions and ensures that other road users are not endangered. Always look for clear visibility and assess traffic conditions before making a U-turn, especially in regions where roads might have curves or obstructions limiting visibility.