Question 11 of 20 effects of which drug? Emphysema, gum disease skin discoloration, and leukemia are all possible A. Antibiotics B. Marijuana C. Tobacco D. Alcohol

## Step 1<br />The question is asking us to identify the drug that can cause the following conditions: emphysema, gum disease, skin discoloration, and leukemia. <br /><br />## Step 2<br />We need to consider each option and its potential effects on the human body. <br /><br />## Step 3<br />Antibiotics are used to treat bacterial infections and do not typically cause the conditions listed. <br /><br />## Step 4<br />Marijuana can have various effects on the body, but it is not typically associated with the conditions listed. <br /><br />## Step 5<br />Tobacco is known to cause a variety of health issues, including emphysema, gum disease, skin discoloration, and leukemia. <br /><br />## Step 6<br />Alcohol can cause a variety of health issues, but it is not typically associated with the conditions listed. <br /><br />## Step 7<br />Based on the information provided, the drug that can cause the conditions listed is tobacco.