Smoking's Link to Respiratory Diseases

Steps:

• Identify diseases caused by lifestyle factors like smoking.
• Recall that smoking irritates the lungs and airways.
• Match choices to known smoking-related conditions.
• Eliminate nutritional or deficiency diseases unrelated to tobacco.

Why B is correct:

• Bronchitis involves inflammation of the bronchial tubes, directly worsened by cigarette smoke's irritants, as per medical definitions of chronic obstructive pulmonary disease (COPD).

Why the others are wrong:

• A. Anemia results from iron or vitamin deficiencies, not smoking.
• C. Rickets stems from vitamin D deficiency, often in children with poor sun exposure.
• D. Scurvy arises from vitamin C deficiency, linked to poor diet.

Final answer: B