In the lesson, you played the role of a juror in the case of State v. Justin B. Goode. In that case, when the defense attorney cross-examined Suss Pihshawn, his goal was to

question the police officer and challenge the evidence against Mr. Goode
question the police officer and challenge the evidence against the state
meet with Suss Pihshawn to discuss strategy without the jury around
meet with Suss Pihshawn to discuss what verdict he will recommend

The goal of the defense attorney in cross-examining Suss Pihshawn was to question the police officer and challenge the evidence against Mr. Goode.