Carbon dioxide, and Sulfur dioxide, because you have to know what gas are very dangerous and which ones arent........
I don’t think you want your health being evaluated by a bunch of high schoolers.
If you’re concerned ask your doctor.
To do a adequate assessment and medical history to see if she would qualify for the medication. You cant just Rx a med because it worked for her friend.
Im not sure if this is correct but the answer is b
