Which of the following terms could be considered an antonym for garish?

The term "garish" typically refers to something that is excessively bright, flashy, or ornate in a way that is considered tasteless or overdone. In contrast, "elegant" conveys a sense of understated beauty, refinement, and simplicity. Therefore, it aligns well as an antonym for "garish." While "showy," "flashy," and "vivid" can refer to bright or ostentatious characteristics, they do not carry the same implication of being in poor taste as "garish" does. "Elegant," on the other hand, suggests a more subtle and sophisticated style, making it the most fitting opposite among the choices given.