Voice expressions can effectively be judged by

Correct option is B

The correct answer is (b) tone of voice
Explanation:
Voice expressions convey emotions and attitudes primarily through the tone of voice. Even without looking at the speaker, the pitch, modulation, and 'feeling' in the voice reveal their underlying message and state of mind.
Information Booster:
⇨ Paralanguage: This refers to the non-verbal elements of communication used to modify meaning and convey emotion, including tone and pitch.
⇨ Emotional Cues: The tone can indicate whether a speaker is happy, angry, sarcastic, or sincere, often providing more info than the actual words.
⇨ Modulation: Changing the tone of voice helps in emphasizing certain parts of a message and keeping the listener engaged.
⇨ Social Context: Tone varies depending on the social situation; it can be formal, informal, authoritative, or submissive.
⇨ Impact on Meaning: The same sentence can have entirely different meanings depending on the tone used by the speaker.
⇨ Aural Perception: Judging expressions via sound requires sensitive listening to the subtle variations in the speaker's vocal delivery.
Additional Points:
• Option (A) words selection: This refers to vocabulary (diction), which conveys literal meaning but not necessarily the emotional 'expression' of the voice.
• Option (C) vocals: This is a broad term for everything related to the voice; tone is the specific qualitative aspect used for judging expression.
• Option (D) speed of voice: Also known as tempo, it can indicate excitement or nervousness but is less reliable than tone for judging overall expression.