フリー問題

問題文

A supermarket chain drops a loyalty file onto the account's file location at an unpredictable hour each night, and the client wants processing to begin as soon as the file lands. Which starting source fits?

選択肢

1. A schedule start, because the automation waits for a clock whose interval matches the window the client agreed and begins the run at the moment that interval elapses in the chosen time zone rather than at an arbitrary hour.
2. A run once start, because the automation waits for a person whose approval matches the step the client agreed and begins the run at the moment that approval is recorded in the account rather than on a repeating cycle.
3. A journey entry start, because the automation waits for a contact whose attribute matches the rule the client agreed and begins the run at the moment that contact enters the flow rather than on a repeating cycle.
4. A file drop start, because the automation waits for a file whose name matches the pattern the client agreed and begins the run at the moment that file appears in the watched location rather than at a fixed hour of the evening.