It's considered to be an advantage to have lungs with increased capacity, because with increased capacity
A. anaerobic exercise is easier.
B. the lungs can better exchange oxygen and waste products in the blood.
C. the chest looks more "buff."
D. the lungs will fight off colds and influenza.
is it b?
Yes.
To determine the correct answer, let's analyze each option:
A. Anaerobic exercise refers to intense physical activity without the use of oxygen. While increased lung capacity could potentially help during aerobic exercise (which relies on oxygen), it may not directly impact anaerobic exercise. Therefore, we can rule out option A as the correct answer.
B. This option suggests that increased lung capacity allows for better exchange of oxygen and waste products in the blood. This statement is accurate. Increased lung capacity means more air can be taken in and expelled with each breath, allowing for a more efficient exchange of gases (oxygen and carbon dioxide) between the lungs and the bloodstream. Thus, option B is a plausible answer.
C. This option addresses the physical appearance of the chest. While increased lung capacity might indirectly contribute to a healthier overall physique, it does not directly affect the appearance of a more "buff" chest. Therefore, option C can be eliminated.
D. The ability of the lungs to fight off colds and influenza depends on the strength of the immune system, not the lung capacity alone. So, option D is inaccurate.
Based on the analysis above, the correct answer would be B. Increased lung capacity allows the lungs to better exchange oxygen and waste products in the blood.