Final answer:
A quinoa and arugula salad is most commonly paired with Balsamic vinaigrette, which complements the flavors of the salad and aligns with a Mediterranean-themed meal.
Step-by-step explanation:
The quinoa and arugula salad traditionally comes with a dressing that complements its ingredients. While the options given include Ranch dressing, Balsamic vinaigrette, Caesar dressing, and Thousand Island dressing, a quinoa and arugula salad is most commonly dressed with Balsamic vinaigrette. This type of dressing pairs well with the nutty flavor of quinoa and the peppery taste of arugula, enhancing the overall flavor profile of the salad.
In relation to your provided dinner information, which includes Greek salad, grilled chicken breast, steamed asparagus, and cooked wild rice, a Balsamic vinaigrette would align well with the Mediterranean theme and existing olive oil used in the Greek salad and asparagus, possibly making it a preferable choice for a cohesive meal experience.