Final answer:
The statement is false - promotions and pay raises are not guaranteed solely based on working well.
Step-by-step explanation:
The statement is false - if the boss told the employee that working well would lead to a promotion and higher pay in six months, it does not necessarily mean it will happen. Promotions and pay raises are at the discretion of the boss and depend on various factors like the employee's performance, company policies, and available opportunities. While hard work can be important for career advancement, it does not guarantee a promotion or pay raise. So, option b) False is the correct answer.