Fellow employees, I know our sales are down this year. Perhaps you, like many of us, have been working harder than ever and feel that you are not gaining any ground. I assure you that things will improve: sales will improve, the company will improve, and your skills will improve. But none of that will happen unless we realize that we succeed or fail as one company, and without unity, we will not have success.
Which statement best explains why the final sentence is effective?