What describes the ability to walk on level surfaces without instability or assistive devices?

The ability to walk on level surfaces without instability or the need for assistive devices is best described by the term "walks." This term specifically refers to the fundamental movement of ambulating or moving from one point to another using one's legs. In occupational therapy, this ability is a vital component of functional mobility and is assessed to determine a client's independence and safety during daily activities.

"Endures" refers to the capacity to sustain performance over time without experiencing fatigue. "Flows" is not a recognized term in the context of mobility and does not pertain to walking or movement directly. "Transports" involves moving a person or an object from one place to another, which may include walking but is more about the act of carrying or taking things somewhere rather than the ability to walk itself.

Therefore, "walks" accurately captures the specific ability in question, highlighting the skill of ambulating effectively on level surfaces.