To find the true statement:
The simplest fraction value of 4/5 is,
[tex]\frac{4}{5}[/tex]The simplest fraction value of 0.80 is,
[tex]\begin{gathered} 0.80=\frac{80}{100} \\ =\frac{4}{5} \end{gathered}[/tex]The simplest fraction value of 80% is,
[tex]\frac{80}{100}=\frac{4}{5}[/tex]Hence, all having the same value.
So that, the correct option is b.
[tex]\frac{4}{5}=0.80=80\text{percentage}[/tex]