Final answer:
Acceptable methods to complete an appointment include double-clicking the appointment and then clicking the post/set complete button, clicking the appointment and then the set complete button on the toolbar, and clicking the appointment, options menu, then post/set complete.
Step-by-step explanation:
The acceptable methods to complete an appointment in a software application or an information system can vary, but based on the options provided in the question, the following methods would typically be considered acceptable:
- Double-click the appointment then click the post/set complete button.
- Click the appointment then the set complete button on the toolbar.
- Click the appointment, the options menu, then post/set complete.
It's important to note that the exact steps might differ depending on the specific software being used for managing appointments.