Which defines the relationship between machine learning and AI?

Machine learning is indeed a subset of artificial intelligence (AI) that specifically focuses on the development and application of algorithms that allow computers to learn from and make predictions based on data. This definition highlights that while all machine learning can be classified as AI, not all AI involves machine learning. Traditional AI encompasses a broader area, which includes various techniques such as rule-based systems, expert systems, and neural networks, among others. Thus, the relationship defined in the correct answer accurately captures the hierarchical structure of these technologies, where machine learning operates within the larger framework of AI, concentrating on data-driven strategies for improving performance and making informed decisions based on past experiences or data.