Which sentence uses bring about to mean cause something to happen?
The redesigned bus route brought about a sharp fall in delays.✓Respuesta correcta
Kim brought the parcel back to reception.
The chair brought up delays at the meeting.
A courier brought in the replacement part.
Explicación
The redesigned route causes a measurable reduction in delays, so it brings about that change. Mentioning delays at a meeting merely introduces the topic and does not itself cause the improvement.