Final answer:
In the Simplex method, the basic feasible variables represent the variables that are currently in the basis and have non-zero values. To find the corresponding extreme point, substitute the values of the basic variables into the original constraints and solve for the remaining variables.
Step-by-step explanation:
In the Simplex method, the basic feasible variables represent the variables that are currently in the basis and have non-zero values. In this case, the basic feasible variables are D, W, and S. The corresponding extreme point can be found by substituting the values of these variables into the original constraints and solving for the remaining variables. For example, if the original constraints are 3D + 2W + S = 5 and D + 4W + 2S = 6, and the values of the basic variables are D = 2, W = 1, and S = 3, we can substitute these values into the constraints and solve for the remaining variables.