What kind of aid can drivers who cannot turn their heads utilize for better visibility?

Answer: C — Extra large mirrors

Drivers who struggle to turn their heads can greatly benefit from utilizing extra large mirrors for enhanced visibility. These mirrors provide a wider field of view, allowing drivers to see more of their surroundings without having to physically turn their heads, which can be especially useful for checking blind spots when changing lanes or merging. The extra large mirrors can help compensate for limited neck mobility by expanding the driver's ability to notice other vehicles, pedestrians, and other potential hazards. This is crucial for maintaining safety on the road as it aids in making informed decisions while driving. Using such mirrors thus contributes to improved overall awareness and reduces the risk of accidents that may occur due to limited visibility.