Answer: External functions

The question asks which Snowflake feature is designed to process unstructured data files. External functions (C) are specifically designed for this purpose as they allow calling external services/APIs to process unstructured data like text analysis, image processing, and other complex transformations. The community discussion shows 100% consensus on C, with multiple comments and upvotes supporting this answer. External tables (A) are for querying structured data stored externally, not processing unstructured data. The COPY INTO command (B) is for loading data into tables, not processing unstructured content. Snowpipe (D) is for continuous data loading, not unstructured data processing.

Author: LeetQuiz Editorial Team