Answer: PUT

The PUT command is specifically designed to upload data files from a local file system to a Snowflake stage. This is clearly documented in Snowflake's official documentation for loading data from local file systems to stages. The community discussion strongly supports this with 82% selecting option C, and the highest upvoted comment (29 upvotes) explicitly states: '(up)load to stage - PUT'. While COPY INTO is used for loading data from stages into Snowflake tables or unloading data from tables to stages, it is not the command for uploading files from local systems to stages. GET is for downloading files from stages to local systems, and JOIN is unrelated to file operations.

Author: LeetQuiz Editorial Team