Final answer:
A French braid(a) is a type of braid where the left and right sections go under the middle strand, resulting in a flat braid that lies on the head.
Step-by-step explanation:
The braid described, where the left section goes under the middle strand and then the right section goes under the middle strand, is called a French braid(a). In a French braid, the strands are gradually added to as you continue braiding, resulting in a braid that lies flat on the head. Dutch braids, on the other hand, have the strands crossed under each other instead of over, creating a braid that stands out from the head.