Among the following fractions, which one has the greatest value?

Explanation

To compare these fractions, find the least common denominator of 8, 16, 40, and 80, which is 80. Converting each fraction: 7/8 equals 70/80, 13/16 equals 65/80, 31/40 equals 62/80, and 63/80 remains the same. Since 70/80 is the highest among these, 7/8 is the largest fraction.