To compare the fractions we can convert each of them to its decimal form, we do this by making the quotient. Then we have:
[tex]\begin{gathered} \frac{2}{3}=0.66\bar{6} \\ \frac{5}{8}=0.625 \\ \frac{11}{16}=0.6875 \\ \frac{3}{4}=0.75 \end{gathered}[/tex]Now that we have each of them in decimal form we can compare them; doing this we conclude that the largest fraction is 3/4