The answer is letter A. The Clear Air Act would be a reason for the Environmental Protection Agency or EPA to regulate car emissions. EPA sets the emission standards under the said rule or regulation and this also covers the green house gas emissions.
I think it can not, because a hawk, is a bird, and a snake is a reptile.
Hope that helps!
=)
Highly unlikely. The only drug that carries through the semen is cocaine, which could effect the baby, even if the mother has not used cocaine.