Which sauce is used in the Shrimp Scampi?

The sauce used in the Shrimp Scampi at Carrabba's is indeed the garlic and white wine sauce. This sauce is a key component of the dish, adding a rich flavor profile that complements the succulent shrimp. The combination of garlic and white wine creates a light yet savory base that enhances the overall taste without overpowering the delicate nature of the shrimp.

In the context of the other sauces listed, the creamy Alfredo sauce is typically rich and cheesy, which would entirely change the dish's flavor profile. Marinara sauce, being tomato-based, would not suit the traditional preparation of Shrimp Scampi, as it is not a typical combination for this style of dish. Likewise, pesto sauce, made primarily from basil and olive oil, has a distinctly different flavor that does not align with the classic garlic and white wine sauce used in this particular dish. Therefore, the garlic and white wine sauce is the correct choice and essential to achieving the authentic taste of Shrimp Scampi.