Final answer:
Excessive lip protrusion is usually connected with Class II malocclusion, which is an overbite where the upper jaw and teeth are too far forward compared to the lower teeth and jaw.option b is correct.
Step-by-step explanation:
The question pertains to the appearance of the lips in relation to different classes of malocclusion, which is a misalignment issue of the teeth when the jaws close. Excessive lip protrusion is most often associated with Class II malocclusion. This condition, also known as an overbite, is characterized by the upper teeth and jaw projecting markedly ahead of the lower teeth and jaw.
When this occurs, it often leads to the appearance of the upper lip being pushed outward, creating the excessive protrusion described. In contrast, Class I malocclusion represents a normal overlap of the upper and lower teeth, and Class III malocclusion, or underbite, is where the lower teeth and jaw protrude beyond the upper teeth and jaw, which can result in the appearance of a protruding lower lip.