Which selection method allows a user to initiate the scanning process before selecting an option?

The correct choice is directed scanning, as it is a selection method that empowers users to initiate the scanning process themselves prior to making a selection. This method involves presenting options in a sequential manner and allows users to control when the scanning begins. Users can start the scanning process at their own pace, increasing their engagement and providing them with the opportunity to focus on the available choices before selecting one.

Directed scanning is particularly beneficial for users who may require additional time to process the options presented to them, as they can activate the scanning at a moment that best suits their needs. This method is distinct from indirect scanning, which typically requires a switch or another input to navigate the options, leading the user through the choices without self-initiation.

Also, acceptance time refers to the duration given to the user to select an option once the scanning reaches it, and coded access uses predetermined codes to make selections, neither of which offers the same user control in initiating the scanning process like directed scanning does.