following is an example of a vocal cue:

Clenched fist

Rolling one's eyes

Silence

Crossing arms

None of the above

None of the above

The correct answer is: None of the above.

Vocal cues refer specifically to cues or signals conveyed through one's voice or speech, rather than through physical gestures or facial expressions. The examples provided in the question (clenched fist, rolling one's eyes, silence, crossing arms) are all physical cues or gestures, not vocal cues.

To identify the correct vocal cue from the given options, pay attention to the word "vocal," which implies that the cue should be related to sound or speech. From the list provided, "Clenched fist," "Rolling one's eyes," and "Crossing arms" are nonverbal cues and do not involve any vocalization. "Silence" is also not a vocal cue because it refers to the absence of sound. Therefore, the correct answer is "None of the above" since none of the options represent vocal cues.

To expand on this and further understand vocal cues, it's important to note that vocal cues relate to changes in tone, pitch, volume, or other vocal aspects during communication. These cues often convey emotions, attitudes, or intentions. Examples of vocal cues can include changes in speech rate, hesitations, inflections, volume variations, laughter, or sighs. These cues supplement verbal communication and provide additional context to the message being conveyed. Listening attentively to vocal cues can enhance understanding and improve communication between individuals.