<h3>One of the important things you can do for preventing the common cold is to wash your hands frequently, especially during spring and winter when the virus affects more people.</h3>
Your chest may hurt because you might have something going on your body.
You might have a itchy throat or you might be sick.
3) 2) 1) i think this is the right answer but c looks correct too\
Whether it is a real emergency or a threat to you and/or the public