Final answer:
The AWS feature that supports data classification in data protection is AWS Macie, which uses machine learning to identify and safeguard sensitive data.
Step-by-step explanation:
The key AWS feature that supports data classification in data protection is d) AWS Macie. AWS Macie is a security service that uses machine learning and pattern matching to discover and protect sensitive data in AWS. It automatically provides an inventory of S3 buckets, classifies sensitive data, and generates detailed reports to help meet data privacy regulations and manage data security. On the other hand, AWS Secrets Manager is used for managing secrets, Amazon Fresh is an e-commerce grocery platform, and Amazon Prime is a subscription service providing various benefits. None of these services specialize in data classification like AWS Macie does.