Usability refers to:

• A. The efficiency and effectiveness of an application
• B. The location and accessibility of the hardware
• C. The use of ergonomic concepts
• D. Enhancing the computer skills of end users

Answer: (B)

Usability centers on how easily and effectively users can accomplish their goals with a system. It looks at how efficiently tasks can be completed, how accurately and completely they can be done, and how satisfied users feel during and after use. Describing usability as the efficiency and effectiveness of an application captures exactly how well the software supports real tasks for real users.

The other ideas are related but describe different concepts. Hardware location and accessibility pertain to the physical setup rather than how the software supports task performance. Ergonomic concepts deal with physical comfort and fit, which can influence usability but don’t define it. Enhancing end users’ computer skills refers to training, not how usable the software itself is.