The "Triangular Trade" primarily involved three key regions: Europe, Africa, and the Americas. Based on the choices you provided, it seems like you're referring to different numbered options. However, since I don't have the context for what each number represents, I cannot provide a definitive answer.
If you can tell me what each number corresponds to (for example, which number represents Europe, Africa, and the Americas), I would be happy to help you identify which option best represents the continents involved in the Triangular Trade.