Which of the following reaches the largest value over the range -1 <= R <= 1?  Choose the correct choice from the following options: A) R+1 B) R+2 C) (R)^2 D) (R-1)^2 E) (R)^3
Evaluate all of the expressions:   R+1 has a maximum value of 2, at R=1   R+2 has a maximum value of 3, at R=1   R^2 has a maximum value of 1, at R=+/-1   (R-1)^2 has a maximum value of 4, at R= -1   R^3 has a maximum value of 1, at R=1   Therefore, the answer is (R-1)^2
<result>D</result>
Which of the following reaches the largest value over the range -1 <= R <= 1?