Which of the following terms describes the ability to perform a task or function?

The term that best describes the ability to perform a task or function is competence. Competence refers to the skills, knowledge, and abilities that an individual possesses, allowing them to effectively execute specific tasks or roles within various contexts, whether it be in a professional environment or in everyday life. It signifies not just theoretical knowledge, but also the practical application of skills in real-world scenarios.

In contrast, being a workaholic pertains to a person who compulsively works excessively, which does not inherently reflect their ability or competence in task performance. Physical attitude relates more to an individual's physical readiness or approach rather than their overall ability to execute tasks. General knowledge refers to a broad understanding of various topics but does not specifically measure a person's ability to carry out specific tasks or functions effectively. Thus, competence is the most precise term for denoting the ability to perform a task.