​Why Don't State and Federal Governments Force People to Be

​Why don't state and federal governments force people to be more efficient in their use of energy?

A) ​Taxes that would discourage energy use are regressive taxes, which hit poor and middle-class people the hardest.
B) ​People resent taxes,so elected leaders are unlikely to support them.
C) ​Regulations and subsidies may not work well enough to encourage people to change their energy use.
D) ​Many consumers and businesses, especially in Texas,do not support government intervention in the economy.
E) ​All of these are reasons.