This commercial was released just prior to a vote in the United States Congress to regulate carbon dioxide emissions as a form of pollution under the Clean Air Act in an effort to prevent the legislation from passing.

When the Competitive Enterprise Institute highlights that "Greenland's glaciers are growing not melting" and "Antarctica's ice sheet is getting thicker not thinner," what technique is this front group using:

Group of answer choices

a$.$casting doubt on scientific consensus

b$.$using a neutral, non$-$partisan, or scientific sounding name

c$.$claiming regulations will lead to economic problems

d$.$promoting individual action as a solution to environmental problems

e$.$claiming environmentalists are extremists