Which provides the best example of a company policy which addresses attendance and time off?

A company requires all employees to file vacation day requests first with the human resources department and then with their supervisors.
A company uses a system for promotions that evaluates candidates based on achievements and without knowledge of the candidate's gender or race.
A company requires all employees to file vacation day requests first with the human resources department and then with their supervisors.
A company requires all incoming job candidates to complete a screening for illegal and certain legal substances before hiring.