What failure criteria relates to the steering wheel not turning freely?

The criteria related to the steering wheel not turning freely primarily focuses on its ability to rotate without obstruction in both directions. When the steering wheel does not turn freely to the full left and right, it indicates that there may be issues with the steering mechanism, potentially leading to unsafe driving conditions.

A steering wheel that can only partially turn or has resistance suggests that there might be a mechanical failure, such as a lack of lubrication, damaged components, or a misalignment in the steering system. These issues can severely affect a driver's control of the vehicle, particularly in emergency maneuvers or while negotiating turns.

In contrast, other conditions listed, such as the wheel being locked in place or experiencing difficulties turning in only one direction, do signal problems, but they do not encompass the broader issue of freedom of movement in both directions as effectively as the correct answer does. The focus on full freedom of movement highlights the importance of proper steering function for overall vehicle safety.