D 7.7
1) Rational numbers are numbers that can be written as a ratio like
1/2, 3/5, 5, and so on.
2) The rational numbers between 7 2/3 and the √60
At first 7 2/3 can be rewritten as 23/3 or 7.66
√60 it is not a rational number but it is approximately 7.74
3) So the only is 7.7