Hello! In order to the fractions to execute which one is greater than the other, a whole strip must be equal in length, though they are divided by parts. In answer choice A, one strip is longer than the other. A is out. Same thing with C. One strip is longer than the other. C is eliminated. B does not properly show one of the strips as one whole. B is out. D has the strips equivalent to one whole, and correctly executes how 5/6 > 5/8. The bottom right part is your answer. The answer is D.