Why are non sequiturs considered a logical fallacy?

Someone answer this asap for an office manger uses the function s(x) to determine the number of shirts the company can make when the employees work for a total of x hours. when the employees have worked for a total of 300 hours, they produces 500 shirts. which equation correctly represents the company’s production of shirts? a. s(300) = 500 b. s(300) = 800 c. s(500) = 300 d. s(500) = 800