Essentially, the question is asking: which of the measurements is the closest to the real weight of the soda which is 16 ounces. Since all of the measurements are above 16 ounces, we have to ask which one is the smallest!
And the smallest number is found in a) 16.02 - this is the correct answer!
You can compare it to b) and C) by thining that 16.02 is also equal to 16.02000.
