A group of grocery store workers staged a 10-minute protest demonstration over working conditions and low wages at the grocery store. When their protest demonstration was over, they gave their supervisor a signed petition. Based on the scenario, which statement is true?
a. The supervisor can fire the workers
b. The workers' actions are legal because they are acting together to influence their working conditions.
c. The workers' actions are illegal because they do not have formal union representation.
d. None of the above