Final answer:
The section described is known as the bang area, which is option a. It is important in hairstyling as it affects the hairstyle and sits near the top of the head.
Step-by-step explanation:
The triangular section of the face that begins at the apex, or high point of the head, and ends at the front corners is called the bang area, or fringe area. The correct answer to the question is option a. bang. When styling hair, this area is often referred to when cutting or arranging hair that will lay over the forehead, such as in the form of bangs or a fringe. This area can greatly affect the overall look of a hairstyle and is near the top of the head.