The correct answer is B — a job failure.

The requirement draws a clear line: non-critical task failures should be logged silently; notifications should only fire when a critical failure causes the whole job to stop. Configuring the alert on ' Job Failure ' achieves this precisely — the notification triggers when the job itself reaches a Failed terminal state, which only happens when at least one critical task has failed and the job cannot complete.

Option A (task failure) would send a notification for every task-level failure, including non-critical ones. That ' s exactly the noise the question wants to avoid. Option C (job success) would never alert on failures at all. Option D (task success) confirms completion but doesn ' t catch failures.

Setting alerting at the job level rather than the task level is also simpler to configure — you don ' t need to mark individual tasks as critical or non-critical in the notification settings.