The answer is D) (5,3)
The corner points of the feasible region for the given linear application are the following:
(0,8)
(0,0)
(3.5,0)
(5,3)
These points can be obtained by graphing the inequalities and locating the points of intersection. Or one inequality can be paired with another and the solution solved. Since there are 4 inequalities, there must be 4 corner points.