The attorney claimed that the evidence was (conclusive)

which is the denotation of the underlined word?

known indirectly
withdrawn from consideration
without substance or support
impossible to disprove

D. Impossible to Disprove

The word “conclusive” means indisputable (Note:  literal meaning = denotation). In the sentence, we can see that the statement says that “because of evidence….”  Evidence is something that can provide a basis for thinking something happened—proof—in so much that one need not have had to experience something first hand or directly in order believe it happened.  Thus, because the attorney made a claim that evidence provided enough information in order to make something indisputably believable without question, we know that  what is denoted is "impossible to disprove."

well for some you have to do on your own on a paper but yeah

showing or suffering from nervousness, fear, or a lack of confidence