The correct answer is B. Raising taxes to higher levels
Step-by-step explanation:
The excerpt from The Conservative Manifesto includes three main points the U.S. government should follow, this includes the fact the government should not increase taxes, which is stated in the second point "Reduction of taxes, or...firm assurance of no further increases". According to this, the action that is not supported by the manifesto is raising taxes because authors of the manifesto wanted to prevent any increase in taxes either by reducing them or keeping the same taxes.