Which of the following is a common use for basil in Italian cooking?

Basil is widely recognized as a staple herb in Italian cuisine, particularly in the preparation of sauces such as pesto. Pesto, a traditional Italian sauce, typically combines fresh basil leaves, garlic, pine nuts, Parmesan cheese, and olive oil, creating a vibrant, aromatic blend that highlights the flavor of basil. Its fresh, slightly peppery taste complements the other ingredients and is essential for achieving the authentic Italian flavor profile that characterizes many pasta dishes and sauces.

In contrast, the other options represent uses of herbs or ingredients that may not align with basil's typical applications. Sweeteners in desserts, marinating meats, and flavoring baked goods usually focus on different flavor profiles or herbs that suit those culinary contexts better. Hence, using basil predominantly in savory dishes and sauces, especially pesto, underscores its importance and relevance in Italian cooking.