A data engineer is looking to use Autoloader for ingesting input data into a target table with the ability to automatically evolve the table's schema upon detection of new fields. The following query is provided with a blank to be filled:

    .format("cloudFiles")
    .option("cloudFiles.format", "json")
    .option("cloudFiles.schemaLocation", checkpointPath)
    .load(source_path)
    .writeStream
    .option("checkpointLocation", checkpointPath)
    .___________
    .start("target_table")

Which option correctly fills in the blank to meet the specified requirement?