The claim made by President Carter in this excerpt from the debate was that his polices have already reduced inflation by more than 10 percent.
This refers to a statement in which a writer or speaker presents an assertion as truthful to substantiate an argument.
Hence, from the excerpt from the debate, the President made a claim that his polices have already reduced inflation by more than 10 percent.
Therefore, the Option D is correct.
Read more about claim
brainly.com/question/2748145
#SPJ1