How does regular exercise maintain a healthy respiratory system?

a) it cilia in the lungs eliminate mucus.

b) it lungs from becoming too large.

c) it lungs exchange gases at a slower rate.

d) it lungs become more efficient at gas exchange.

Option D

Explanation:

It helps lungs to become more efficient by improving the gas exchange in the lungs. Regular exercises improves the cardio-respiratory fitness making it easier for the heart to be supplied with oxygen.

Staying fit and active is important for the people who are suffering from cardio respiratory disorders must exercise regularly  in order to keep their heart fit.

The people suffering from respiratory disorders such as blockage should walk and exercise regularly.

this disease is :

* endemic (present in a defined area that is a village)

* a bacterial infection (treated with antibiotic)

* communicable by contact (by the hands)

manu-porterage is the most common mode of transmission, it transmits germs from one individual to another via the hands. this concerns infections of exogenous origin.

endemic disease, or endemic disease, refers to a disease that is constantly present in a given population, often tied to a specific geographic origin, as opposed to a pandemic that is not a sporadic disease.

antibiotics are molecules that have the property of killing (bactericidal) or limiting the spread (bacteriostatic) of bacteria.

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