Final answer:
Signor Cardini created the Caesar Salad in the 1920s at his Tijuana restaurant. This salad is distinct from the other options provided, having its unique origin and association with Cardini.
Step-by-step explanation:
In the 1920s, Italian chef Signor Cardini created the Caesar Salad at his restaurant in Tijuana, Mexico. The correct answer to the question is a) Caesar Salad. The other options, Waldorf Salad, Cobb Salad, and Caprese Salad, each have their unique histories and origins but are not associated with Cardini's creation.