Which algorithmic approach is MOST commonly used by major food delivery platforms to provide personalized recipe recommendations based on a customer's past orders?

Modern food retailers and delivery services are leveraging sophisticated AI algorithms to predict and suggest meals, ingredients, and recipes to consumers. These recommendation systems analyze purchase history, browsing behavior, seasonal trends, and even dietary preferences to create personalized food experiences. How well do you understand the technology behind your next dinner suggestion?

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Collaborative filtering, which suggests recipes enjoyed by users with similar taste profiles
Binary classification, which categorizes all recipes as either 'will enjoy' or 'will not enjoy' based on ingredient lists
Random forest optimization, which creates decision trees based exclusively on seasonal ingredient availability
Sentiment analysis, which recommends dishes based on the emotional content of customer reviews