Calculate the range of 20, -6, 25, 30, 21, 28, 32, 33, 34, 5, 3, 2, and 1.

Answer Details

To calculate the range of a set of numbers, you subtract the lowest number from the highest number. In this case, the lowest number is -6 and the highest number is 34. So the range is: 34 - (-6) = 40 Therefore, the correct answer is option D: 40.