Answer:
Option D
Mega Corp can hire replacement workers at any time during a strike
Step-by-step explanation:
According to the United States labor law governing private sector employees, an employer may not fire, but may permanently replace, workers who engage in a strike over economic issues.
Since Mega Corp is a business in the private sector, they are allowed to hire replacement workers to continue running their business operations during a strike action by the original employees. However, they are not permitted by labor laws to fire the original employees.