Which word refers to performing a task without outside help?

The word that refers to performing a task without outside help is "independently." This term emphasizes the ability to carry out actions or tasks on one’s own, without relying on assistance or support from others. It signifies self-sufficiency and the capacity to manage responsibilities alone.

In contrast, the other terms highlight aspects of working with others or relying on support. "Collaboration" involves multiple individuals working together toward a common goal, while "assisted" clearly indicates the presence of help from another party. "Cooperatively" emphasizes working in conjunction with others, suggesting a teamwork approach rather than individual effort. Thus, "independently" is the appropriate choice for expressing the idea of completing tasks solo.