Explanation:
* Prevent users from sharing PII: Data Loss Prevention
* Use machine learning to train a model: Information Protection
The correct selections are Data Loss Prevention and Information Protection . Microsoft states that Microsoft Purview Data Loss Prevention (DLP) helps organizations identify, monitor, and automatically protect sensitive information, including preventing people from sharing sensitive items such as PII in Microsoft 365 locations and other supported channels. That directly matches the requirement to stop users from sharing files that contain personally identifiable information.
For the second requirement, the correct choice is Information Protection because Microsoft Purview's classification and labeling capabilities include trainable classifiers , which Microsoft describes as a tool you can train using machine learning to recognize types of sensitive or business content. Microsoft positions these classification capabilities under Microsoft Purview Information Protection and data classification. That makes Information Protection the best fit for "use machine learning to train a model that detects sensitive content." The other options are not the best match here. Communication Compliance monitors risky communications, DSPM for AI focuses on AI posture and exposure, and Insider Risk Management detects risky user behavior rather than blocking PII sharing or training classifiers.