20. is a common upper respiratory system disorder. O A. COPD OB. Asthma OC. A cold OD. Pneumonia

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40 votes

20.

is a common upper respiratory system disorder.
O A. COPD
OB. Asthma
OC. A cold
OD. Pneumonia

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14 votes

B. Asthma because It is fairly common for people to be born with asthma.

Jcesarmobile answered Feb 10, 2022

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