A strong work ethic is vital to a company achieving its goals. Every employee, from the CEO to entry-level workers, must have a good work ethic to keep the company functioning at its peak. A work ethic is a set of moral principals an employee uses in his job. Certain factors come together to create a strong work ethic.
The correct answer would have to be C age.
Joes way of hanging out with the wrong people can be a big factor of the problem with his substance addiction