Identify three types of non-verbal signals commonly used in Silent Library tasks.

• A. Eye contact, nod, and wave.
• B. Finger snap countdown.
• C. Hand raise, palm open stop, finger tap countdown.
• D. Clap, whistle, stomp.

Answer: (C)

In Silent Library tasks, communication must stay quiet and clearly visible, so participants rely on deliberate non-verbal cues that are easy to interpret without breaking the silence. The best three signals are hand raise, palm open stop, and finger tap countdown. A raised hand signals you want attention or to participate without making a sound, a palm open with an outward, flat stance clearly says to stop or pause, and a finger tap countdown provides a silent way to indicate time or pacing by counting with the fingers. These cues are aligned with the setting because they are instantly understood, visually clear, and silence-friendly.

Other options rely on audible motions or vague gestures. Eye contact and a nod can be ambiguous and may not convey a specific action quickly, while a wave draws attention and isn’t as discrete. A finger snap creates an audible sound, breaking the silent rule. Clapping, whistling, and stomping are loud and disruptive, which defeats the purpose of Silent Library tasks.