To solve this question, we need to find the sum of the given fractions. First, we need to find a common denominator, which in this case is 8. Then, we convert each fraction to have a denominator of 8. 1/2 becomes 4/8, 1/8 remains as 1/8, and 1/4 becomes 2/8. Adding these fractions together, we get 4/8 + 1/8 + 2/8 = 7/8. Therefore, the correct answer is 7/8.