The phrase "to meet someone's preferences" means to satisfy or accommodate a person's desires, tastes, or needs. It implies that something is being done specifically for that individual based on what they want or like. For example, if you go out to eat and order your meal the way you like it (e.g., with no onions), then the restaurant has met your preferences by preparing the dish according to your specifications. In a broader sense, this phrase can also be used in reference to meeting someone's needs or expectations, such as when a product is designed to meet consumer demand or when a service is tailored to fit an individual's requirements.