Answer: GET /api/files/

The question asks which REST API endpoint is used for managing unstructured data files in Snowflake. Based on the community discussion and Snowflake documentation, GET /api/files/ (option C) is specifically designed for retrieving unstructured data files from internal or external stages. This is supported by the highest upvoted comment (10 upvotes) and official documentation reference. While insertFiles (option A) is mentioned for uploading unstructured data, the question specifically asks about REST API endpoints, and GET /api/files/ is the documented REST API for file retrieval operations. Options B (insertReport) and D (loadHistoryScan) are not relevant to unstructured data file management in Snowflake's REST API context.

Author: LeetQuiz Editorial Team