Aperson's bac will go down if they:
a. drink coffee
b. take a cold shower
c. vomit
d. none of the above

A person’s BAC (Blood alcohol content) will not go down doing any of the mentioned processes. So, the correct option is none of the above.  

Further Explanation:

Alcohol is a liquor/beverage which is produced by a process known as fermentation. Different type of alcohol is made from different sources of sugar and yeast. Brain is one of the important organs of the body as it controls the vital functions of the body.

The alcohol when consumed readily gets absorbed through lining of digestive tract. Through the absorption the alcohol reaches the blood leading to increased BAC. As the alcohol is absorbed it is destined to move to liver where it is metabolized to form less toxic products and a final elimination is done via urination.

The means given in the question are taking shower, vomiting and drinking coffee. Vomiting helps in removal of alcohol from the stomach. While the shower and coffee helps in masking the effects of the alcohol.

Due to the presence of alcohol in blood it cannot be reduced by any given means. For BAC to reduce body has to detoxify the alcohol by its own mechanism that is with the help of liver.

Learn More:

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Answer Details:

Grade: High School

Subject: Health

Chapter:  Metabolism

Keywords:

BAC, blood alcohol content, liver, alcohol, fermentation, yeast, blood alcohol, metabolism, breakdown, digestion, assimilation, absorption, detoxify, elimination, urination.