Final answer:
The best styling choice for a client with a round facial type is one with volume on the top and volume or length at the sides.
Step-by-step explanation:
The best styling choice for a client with a round facial type would be one with volume on the top and volume or length at the sides. This choice helps to create the illusion of a longer, slimmer face by adding height and width at the right places. For example, a haircut with layers on top and longer side-swept bangs can achieve this effect. It is important to avoid styles that add too much width to the face, such as styles with no volume on the top and volume and softness at the sides (option B).