What dressing is made from mayonnaise and sour cream?

The correct dressing that is made from mayonnaise and sour cream is Thousand Island Dressing. This dressing features a creamy texture and a tangy flavor profile, achieved by combining these two base ingredients. Thousand Island Dressing is often used in salads and as a condiment for sandwiches, particularly in Reuben sandwiches.

The other choices do not match the composition of mayonnaise and sour cream. Ranch Dressing typically includes buttermilk, mayonnaise, and various herbs and seasonings, while Bleu Cheese Dressing is primarily made with mayonnaise or sour cream alongside crumbled bleu cheese, but does not contain both mayonnaise and sour cream as its main bases. Balsamic Vinaigrette, on the other hand, is a type of vinaigrette made primarily from balsamic vinegar and oil, without any mayonnaise or sour cream involved. Each of these other dressings has distinct flavor profiles and base ingredients that differentiate them from Thousand Island Dressing.