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------------------------------------------------ A car equipped with a vacuum assist power brake system requires an abnormal amount of pedal effort to stop the car. Which of the following could be the cause?

A. Worn brake pads
B. Low brake fluid level
C. Faulty brake booster
D. Air in the brake lines

The correct answer is C) Faulty brake booster. When a car equipped with a vacuum assist power brake system requires an abnormal amount of pedal effort to stop, a Faulty brake booster could be the cause.

Explanation:

The correct answer is C) Faulty brake booster. The cause of the abnormal amount of pedal effort in a car equipped with a vacuum assist power brake system could be a Faulty brake booster. When the brake booster malfunctions, it can result in increased pedal effort being required to stop the car as the power assistance is compromised. This issue can significantly impact the braking performance and safety of the vehicle.