What ability allows an individual to complete tasks without requiring assistance from others?

The ability to complete tasks without requiring assistance from others is best described by the concept of independence. Independence refers to a person's capability to think and act for themselves, making choices and executing tasks without relying on external support. This trait is essential in various settings, including personal lives and professional environments, as it fosters a sense of responsibility and self-sufficiency.

While self-discipline involves the ability to control one's impulses and focus on accomplishing tasks, and self-motivation pertains to the internal drive to initiate and persist in certain behaviors, these traits can complement independence but do not fully encompass the broader concept. Determination, on the other hand, is the will to achieve goals despite obstacles, but it also does not inherently imply the capability to work alone. Hence, independence is the most fitting choice for describing the ability to complete tasks autonomously.