A
1) For this problem, let's visualize the numbers. And think of it as discounts, for instance.
0.22, 15%=0.15 , 1/7=0.14 12%=0.12 1/9=0.11
So, the greatest (discount) to least (discount)order row of numbers is this. We can rewrite those numbers as:
22%, 15%, 14%, 12%, 11%
Then, the answer is A