The Primary Hook and Secondary Hook on the trackball are selected by which pair of buttons?

• A. Left trackball button; Bottom trackball button
• B. Right trackball button; Top trackball button
• C. Left trackball button; Top trackball button
• D. Right trackball button; Bottom trackball button

Answer: (A)

The function pairs for selecting the Primary Hook and Secondary Hook are mapped to the left and bottom buttons on the trackball. This pairing makes sense because the left button is the primary input control for the device, while the bottom button is highly accessible to the thumb, allowing quick, distinct activation of the secondary hook without moving the hand away from the main input. Using these two buttons keeps the actions ergonomically convenient and reduces the chance of accidental activation, which would be more likely if the hooks were mapped to other buttons that are harder to reach or closer to the primary clicking area.