Question

maintaining a healthy weight allows the respiratory system to work more effectively because
(1 point)
○ oxygen is being delivered more adequately.
○ the heart does not have to pump as forcefully.
○ the capillaries are constricted.
○ the lung capacity allows for small amounts of air.

Explanation:

• Excess weight can restrict lung expansion and increase cardiovascular strain. A healthy weight removes these restrictions, allowing the respiratory system to deliver oxygen more effectively to the body's tissues.
• The heart pumping less forcefully relates to cardiovascular, not direct respiratory function. Constricted capillaries would impair oxygen delivery, which is not the case with healthy weight. Smaller lung air capacity is incorrect, as healthy weight supports proper lung function for adequate air intake.

Answer:

A. oxygen is being delivered more adequately.