25. The defense attorney's goal was to __ the credibility of the opposing witness, casting doubt on their account of events. a) undermine b) demonstrate c) concede d) warrant

## Step 1<br />The problem is a multiple-choice question that tests your understanding of English vocabulary. The sentence is about a defense attorney's goal, which is to cast doubt on the credibility of the opposing witness. The attorney is trying to make the witness's account of events seem less believable or trustworthy.<br />## Step 2<br />We need to find the word that best fits this context. Let's look at the options:<br />a) undermine<br />b) demonstrate<br />c) concede<br />d) warrant<br />## Step 3<br />The word 'undermine' means to weaken or damage the credibility or trustworthiness of something. This fits the context of the sentence perfectly.<br />## Step 4<br />The word 'demonstrate' means to show or prove something. This doesn't fit the context of the sentence because the attorney is not trying to prove the witness's account, but to make it seem less believable.<br />## Step 5<br />The word 'concede' means to admit or acknowledge something. This doesn't fit the context of the sentence because the attorney is not admitting anything, but trying to cast doubt.<br />## Step 6<br />The word 'warrant' means to justify or authorize something. This doesn't fit the context of the sentence because the attorney is not justifying or authorizing the witness's account, but trying to make it seem less believable.