What is a “breathalyzer test”?

1. Correct answer: A test of exhaled air by means of a device that provides information about a person’s blood alcohol level.
2. A stress test measuring the air quantity that enters the driver’s lungs while driving.
3. A test in which a person exhales into a device that gives information about his lung volume.
4. A test performed for new-driver applicants by a family doctor, at the requirement of the Licensing Authority.

WhyIn a breath test the driver blows into a device, which measures the alcohol level from the exhaled air. Lung capacity is not measured.