A, B, and E are the intended privacy-preserving choices. Data minimization limits processing to information that is adequate, relevant, and necessary for the defined purpose, reducing privacy exposure during AI development. Anonymization protects individuals by transforming information so that people are no longer identifiable under the applicable standard. Federated learning is a recognized privacy-enhancing technology that enables models to be trained across distributed datasets without centrally sharing the underlying raw training data. The ICO specifically identifies federated learning and related privacy-preserving methods as useful during AI training and explains the relationship between anonymization and data minimization. Data mapping is primarily a governance and inventory activity used to understand data flows, while data cleansing principally improves data quality by correcting or removing inaccurate, incomplete, or unsuitable records; neither is inherently a PET.