Typically Cardiac arrest is "Has no heart beat" hence cardiac only refers to the heart. But it ciuld be a trick question because in a cardiac arrest the person is not breathing and is unconscious as well. But i would go with "Has no hearbeat"
Answer:
because they can do some things and harm you
Explanation:
The common cold is caused by viral pathogens, the most common of which is rhinoviruses. your answer would be viruses.