Identify a common assistive device used by individuals with altered mobility.

The correct answer reflects a comprehensive understanding of assistive devices for individuals with altered mobility. Walkers, wheelchairs, and crutches are all widely used to support different mobility needs.

Walkers provide stability and support for individuals who may have difficulty balancing or require assistance while walking. They can be particularly useful for those recovering from injuries or surgeries, as well as for those with chronic conditions affecting their mobility.

Wheelchairs are essential for individuals who are unable to walk or have significant difficulties with mobility. They allow for greater independence and mobility in various environments, and they come in different types to accommodate a range of needs and preferences, including manual and powered options.

Crutches serve as an immediate support tool for individuals recovering from leg or foot injuries. They allow users to move around while keeping weight off the injured limb, facilitating healing while providing mobility.

By recognizing that all these devices serve distinct but overlapping purposes in aiding mobility, it becomes clear why this answer is the most inclusive and accurate for the question posed.