Final answer:
A plurality opinion is written when there is disagreement regarding the reasons for the outcome, despite a majority agreement on the result of a legal case.
Step-by-step explanation:
A plurality opinion is written when there is disagreement regarding the reasons for the outcome, despite a majority agreement on the result of a legal case. It represents the opinion of the largest group of justices who agree on the decision but may have different perspectives on the legal reasoning behind it. This is in contrast to a majority opinion, which is the official ruling of the court and provides the court's reasoning and precedent for the decision.