Varying the tone of your voice when speaking is called:

• A. Syntax
• B. Affect display
• C. Prosody
• D. Lexicon

Answer: (C)

Verified step by step guidance

1. Understand that the question is asking for the term that describes varying the tone of your voice when speaking.
2. Recall that 'Syntax' refers to the arrangement of words and phrases to create sentences, so it is related to sentence structure, not tone.
3. 'Affect display' involves nonverbal expressions of emotion, such as facial expressions or body language, rather than vocal tone.
4. 'Lexicon' refers to the vocabulary of a language, which is about word choice, not how words are spoken.
5. Recognize that 'Prosody' is the correct term for the rhythm, stress, and intonation of speech, which includes varying the tone of your voice.