The correct answer is B. Sounding board. In expert-witness cross-examination, the “sounding board” method is used when counsel asks the expert to agree with a series of basic or already accepted facts so the lawyer can repeat favorable points through the witness. The technique is not mainly about exposing inconsistency or prejudice. Instead, it uses the witness to reinforce the examining party’s theory of the case by obtaining repeated agreement on foundational matters. Secondary CFE prep materials describe sounding board in this same way: the witness is used to generally agree with the questioner’s position or with favorable facts already established.

The other options do not fit as well. Contradiction would involve trying to show the witness has said something inconsistent. Bias aims to show the witness is not objective, perhaps because of fees or relationships. Myopic vision usually refers to suggesting the expert’s perspective is too narrow or one-sided. Here, Nancy is simply being led to agree with basic, favorable facts, which is the classic sounding-board approach. Therefore, B is the most accurate answer.