Which of the following is NOT a legal holiday observed with pay?

The selection of Groundhog Day as the choice that is not a legal holiday observed with pay is correct because it does not hold the same recognition or significance as the other options in terms of federal or state holidays. Martin Luther King Jr. Day, Thanksgiving Day, and Veterans Day are all officially recognized holidays in the United States, typically observed with paid time off for employees. These holidays serve to commemorate important historical figures and events or recognize the contributions of veterans. In contrast, Groundhog Day, while celebrated informally by many, does not have the legal recognition that warrants paid time off in most employment contexts, making it the only choice that does not qualify as a legal holiday observed with pay.