Which of the following statements is an opinion?

The statement indicating that Columbus Day should no longer be a national holiday represents an opinion because it expresses a personal belief or viewpoint regarding the status of a specific holiday. This opinion carries an evaluative judgment about the significance or appropriateness of Columbus Day as a holiday, suggesting a preference for its discontinuation.

In contrast, the other statements present factual information, presenting specific dates and occurrences associated with recognized holidays. These facts can be verified objectively and do not include personal judgments or opinions. The distinction is important as it helps delineate between subjective interpretations and objective truths in discussions about holidays or other cultural topics.