Why must you ensure the brake fluid is changed regularly in accordance with the vehicle manufacturer's instructions?

You answered correctly by selecting all three reasons. Regularly changing the brake fluid is important because brake fluid absorbs moisture over time, which can lower its boiling point and make your brakes less effective under heavy use. Keeping the water content low prevents this problem and ensures your braking system remains functional even when it gets very hot. Additionally, old brake fluid can lead to internal corrosion or damage to brake components, so changing it as recommended helps protect the whole system. Always follow the manufacturer’s schedule to keep your brakes safe and reliable.