Which of the following indicates a problem with the windshield during an inspection?

The option that indicates a problem with the windshield during an inspection is when it does not allow full visibility. This is crucial because the windshield is an essential component for safe driving, providing a clear view of the road and surroundings. Obstructions such as cracks, chips, or excessive dirt can severely impair a driver's ability to see, leading to dangerous situations. Ensuring the windshield allows for full visibility is vital for maintaining safety standards and complying with regulations.

Proper sealing, having no obstructions, and allowing light to pass through reflect attributes of a functional windshield and do not indicate any problems. They represent conditions that contribute to visibility and the structural integrity of the windshield, which are not issues in themselves.