Step 1: Understanding the /z/ sound production.
The /z/ sound is a voiced, alveolar fricative. This means that the vocal cords vibrate and air passes through the constriction formed between the alveolar ridge and the tongue, producing a friction sound.
Step 2: Analyzing the options.
- (A) Correct, the vocal cords will vibrate during the production of the /z/ sound as it is a voiced sound.
- (B) Correct, the velum (soft part of the roof of the mouth) will be raised to allow air to pass through the oral cavity.
- (C) Incorrect, the two lips are not in contact during the production of the /z/ sound, unlike the /p/ or /b/ sounds.
- (D) Incorrect, air does pass through with friction (turbulence) to create the /z/ sound, unlike a sound like /m/ where the air passes without turbulence.
Step 3: Conclusion.
Thus, the correct answers are (A) Vocal cords will vibrate and (B) Velum will be raised.