The PUT command in Snowflake automatically compresses files using Gzip (option C) and encrypts files (option D) during the transfer process. This is confirmed by the Snowflake documentation and the strong community consensus (90% selected CD). Option A is incorrect because PUT does not automatically create a File Format object; file formats must be specified separately. Option B is incorrect because PUT does not automatically use the last stage created; the stage must be explicitly specified in the command.