The "Breathalyzer" is a test of a person s BAC.
Answer A is incorrect because BAC is only really affected (albeit slightly) by a persons weight, not level of physical fitness.
Answer B is incorrect because while fresh air and coffee may make you feel more alert, and food may slow the rate of absorption of alcohol, none of those actually speed up the metabolization of alcohol.
Answer C is correct because the Breathalyzer is an almost foolproof way of testing a persons BAC.
Answer D is incorrect because a neither a chemical test, blood test, nor breathalyzer are necessary to be charged with DWI.
