Final answer:
Peremptory challenges allow exclusion of jurors without reason, while challenges for cause require a supported bias claim.
Explanation:
Peremptory challenges are used to exclude potential jurors from serving on the jury without providing a reason. They allow each side to strike a certain number of prospective jurors without explanation during jury selection. However, challenges for cause are made when a potential juror is believed to have bias that could affect the case's outcome and need to be supported with reasons.
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