Answer:
The correct answer is C. Coughs or sneezes into the air.
Explanation
When we sneeze or cough without covering our mouths, we are contributing to the spread of pathogens or diseases through indirect contact, that is, a form of spread in which diseases are dispersed in the air, and they are transported there until they find another body. This is realted to airborne transmission because disease travels or remains suspended in the air for a time in which it can infect other people. For this reason, it is recommended that when we are sick we sneeze and cough by covering our nose and mouth to avoid its indirect transmission. So, the correct answer is C. Coughs or sneezes into the air.