Final answer:
In AutoCAD, the right-click menu during an active command generally contains the Undo command option, though other options may appear based on context. Option C.
Step-by-step explanation:
When an AutoCAD command is active, the right-click menu does not always show the same options because it can be context-sensitive.
However, one of the consistent options available through various versions of AutoCAD is the Undo command option. This allows users to quickly revert the last action taken if a mistake is made or if they change their minds about a command. To reiterate, when you right-click during an active command in AutoCAD, the context menu usually presents the option to undo the last action.
It's important to note that other options available in the right-click menu, such as the Help menu, Zoom, and Pan real-time, or the Options dialog, might appear based on the state of the application and the context of your action, but these are not guaranteed to be present at all times like the Undo command option.
Hence, the right answer is option C.