Final answer:
Facial hair design includes beards, goatees, mustaches, and sideburns, which complement the overall styling. When describing a pattern with ringlets and interrupted spirals, it is best characterized as curved.
Step-by-step explanation:
In reference to the question regarding facial hair design, which includes beards, goatees, mustaches, and another element, the correct option from the list provided is c) sideburns. The styles mentioned in the options such as fades, gradation, and planar form are different concepts related to haircuts or art. Sideburns, however, are directly associated with facial hair and the different designs that can be achieved with them.
When analyzing a pattern described as having little ringlets on the cheeks of a face and spirals that are then interrupted by horizontal bands, the best descriptor of the pattern would be d) the pattern is curved. This describes the rounded shapes and spiral motifs clearly, as opposed to a faded, sharper, or colorful pattern.