Which of the following terms is used to denote limits placed on design options to facilitate user tasks?

The term that denotes limits placed on design options to facilitate user tasks is constraints. Constraints help define boundaries within which a user can operate, ensuring that processes are streamlined and intuitive. By limiting choices, designers make it easier for users to navigate tasks without feeling overwhelmed by too many options. This approach can enhance usability by guiding users toward the correct actions and preventing errors.

For example, in a form design, constraints might involve disabling certain fields based on prior selections, ensuring users only input relevant information. This not only improves the efficiency of the interaction but also helps in minimizing cognitive load, as users focus on completing tasks effectively.

Affordances, on the other hand, refer to the qualities of an object that suggest how it should be used, while forgiveness relates to the system's ability to allow users to recover from errors easily. Conventions are recognized standards of design within certain contexts that guide user expectations. While these terms are related to user experience design, they do not specifically represent the concept of limiting options to aid user tasks, which is the essence of constraints.