D. shivering. dilation of capillaries occurs in shock, or lack of blood flow to the body as well as in times of stress, perspiring cools off the body (the patient's temperature is low, not high), and drinking water would also cool off the body.
Alcohol or drugs not only impair your driving, they also impair your all of the above.
Talking about alcohol, once you drink too much, you're drunk. Being drunk has the side affects to say things that are not meant to be said (putting that in the category of both of the options). Most drugs have the same side affects as being drunk, but some are worse.