What requirement of the clean air act have fossil-fuel-producing states such as texas, ohio, and west virginia sometimes opposed?
a. the requirement that all states achieve the same goals by the same deadlines
b. the requirement that all states achieve the same goals by the same deadlines
c. the requirement that fossil fuels be abandoned as a source of energy
d. the requirement that fossil fuels be abandoned as a source of energy
e. the requirement for annual inspection of motor vehicles
f. the requirement for annual inspection of motor vehicles
g. the requirement for permits for stationary sources of pollution