Answer:
The Answer is RNA.
Explanation:
Because RNA consists of four nitrogenous bases: adenine, cytosine, uracil, and guanine. I am 100% sure that is the answer if it's wrong, very sorry.
C human selection is the answer hope this helps
The range of a set of data is the difference between the highest and lowest values in the set.
And to find the range, first order the data from least to greatest. Then subtract the smallest value from the largest value in the set.