Which uthese is a smoking-related disease that causes permanent damage to the lungs? emphysema dental decay type 2 diabetes stroke

## Step 1<br />The question is asking us to identify a disease that is directly related to smoking and causes permanent damage to the lungs. <br /><br />## Step 2<br />We need to evaluate each of the given options based on this criterion. <br /><br />## Step 3<br />Emphysema is a type of chronic (long-term) lung disease. People with emphysema have difficulty breathing due to a restriction in airflow. This condition is directly related to smoking and causes permanent damage to the lungs.<br /><br />## Step 4<br />Dental decay, type 2 diabetes, and stroke are not directly related to smoking and do not cause permanent damage to the lungs.