Given the fraction above which is 4/16, the ratio that would be equivalent to this is option C. 8:32. Why is this so? The fraction 4/16 is the same with 4 : 16. When this is simplified, we get 1/4 or 1 : 4. The same with 8 : 32. Numbers 8 and 32 are divisible by 4. We also get 1 : 4 if it is simplified. 2 : 4 = 1:2; 6 : 20 is 3:10; and 12:64 is 3:16. Option C is the correct answer therefore.