Final answer:
The answer is Nasals. Nasal sounds are formed with the obstruction of breath by the lips, teeth, and tongue, causing the airflow to be redirected through the nose.
Step-by-step explanation:
The correct answer is A) Nasals.
Nasal sounds are formed with the obstruction of breath by the lips, teeth, and tongue. This obstruction causes the airflow to be redirected through the nose, resulting in sounds like 'm', 'n', and 'ng'.
For example, when you say the word 'mouth', the 'm' sound is a nasal sound because your lips create an obstruction, causing the air to flow through your nose.