Which is a valid reason for an individual to quit smoking?

Quitting smoking is associated with numerous health benefits, making it a critical decision for individuals concerned about their health. The improvement in lung function after cessation is significant; when a person stops smoking, their lung capacity and overall respiratory health often improve, leading to better quality of life and increased physical endurance.

Moreover, reduced risk of atherosclerosis, which is the buildup of fats, cholesterol, and other substances in and on the artery walls, is another valid reason to quit smoking. Smoking contributes to the development of cardiovascular diseases, and cessation can significantly lower this risk, improving heart health over time.

Additionally, while shorter life expectancy is a well-known consequence of smoking, recognizing that quitting smoking can lead to an extended life and healthier years is immensely motivating for individuals considering cessation.

Given these comprehensive reasons—all focusing on substantial health improvements—it is clear that each statement contributes validly to the case for quitting smoking. Thus, choosing the option that encompasses all valid reasons reflects an understanding of the multifaceted benefits associated with cessation.