The BASIC statement LET Z = 4*W^2 + 2*Y can be evaluated by replacing the variables W and Y with their respective values, which are given as W = 5 and Y = 10. Substituting these values, we get:
Z = 4*(5)^2 + 2*(10)
Z = 4*25 + 20
Z = 100 + 20
Z = 120
Therefore, the value of Z is 120. The correct option is (d).