Which of the following condition could result from years of smoking?

a) tuberculosis
b) emphysema
c) empyema
d) atelectasis

Google each alternative as a keyword along with smoking, e.g., tuberculosis smoking, to find out.

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

The correct answer is b) emphysema.

Emphysema is a condition that can result from years of smoking. It is a lung disease that causes the air sacs in the lungs to become damaged and stretched, leading to difficulty in breathing.

To arrive at the answer, you need some background knowledge about the effects of smoking on the respiratory system. Specifically, smoking is one of the leading causes of chronic obstructive pulmonary disease (COPD), which includes emphysema. By understanding the relationship between smoking and respiratory diseases, you can deduce that emphysema is the most likely condition to result from years of smoking.

Tuberculosis (a) is a bacterial infection, usually caused by Mycobacterium tuberculosis, and while smoking can increase the risk of developing tuberculosis, it is not directly caused by smoking.

Empyema (c) is a condition where there is a collection of pus in the pleural space of the lung due to an infection. While smoking can weaken the immune system and increase the risk of infections, it is not a direct cause of empyema.

Atelectasis (d) refers to the collapse of a lung or a portion of a lung, typically due to a blockage in the airways. Although smoking can lead to respiratory problems, atelectasis is not directly caused by smoking.

Therefore, based on the information provided, b) emphysema is the condition most likely to result from years of smoking.