🚗 The red light before the trip

At 6:30, Lena and her brother are ready to drive to another city. Their bags are in the car. When Lena starts the engine, a red brake warning light stays on. The pedal feels softer than yesterday. She has not driven the car yet today.
Task 1
Write four questions a service worker should ask before saying anything about the cause.
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Task 2
Which detail creates the biggest concern for you? Explain in one sentence.