If they are a non neurological specialist she should probably stay away.
C. Increases digestibility
A gas commonly found in smog is ozone. Correct answer: A
Smog generally occurs in the lower part of the atmosphere is composed mainly of tropospheric ozone (O3), primary particulate matter such as pollen and dust; and secondary particulate matter such as sulphur oxides, volatile organic compounds, nitrogen oxides (NOx) and ammonia gas.
I'm not entirely sure but I think this is true (?) because rescue breathing should only be used if any of the following happened to the victim: drowning, drug overdose, collapse due to breathing problems, an unresponsiveness in infants or children, an unconsciousness adult that isn't breathing normally, and if they are having prolonged cardiac arrest.
Hope this helps! :)
