How do you set the speed input?

• A. By using the wheel to adjust speed
• B. By using the scroll down menu over the speed type in the upper right
• C. By typing the speed into the speed field
• D. By selecting speed from a pop-up in the center

Answer: (B)

Setting the speed input is done with the dropdown control located over the speed type in the upper-right area. You open it and select a predefined speed option from the scroll-down list. This method is best because it restricts choices to valid options, preventing typos or invalid values, and it delivers the chosen speed right away without extra typing. It also keeps the interface clean by presenting options in a compact menu rather than requiring a free-form field or a pop-up that would cover other content.

Using the wheel to adjust speed isn’t the intended input in this context, as it typically changes values in small, continuous increments or a different control. Typing into a speed field would require a text input that isn’t shown here, and a pop-up in the center would be more disruptive to the workflow.