Answer :

b. 4/7

to find this all you do is multiply the numerator by 2. if the numerator multiplied by 2 is higer than the denominator for this problem then it is the answer
[tex]\frac{1}{2}\ it's\ half\\\\a.\ \frac{2}{5}\to\ half\ of\ 5=2.5 \ \textgreater \ 2-the\ nominator\\\\b.\ \frac{4}{7}\to half\ of\ 7=3.5 \ \textless \ 4-the\ nominator\ \boxed{ANSWER!!!}\\\\c.\ \frac{4}{9}\to\ half\ of\ 9=4.5 \ \textgreater \ 4-the\ nominator\\\\d.\ \frac{5}{11}\to\ half\ of\ 11=5.5 \ \textgreater \ 5-the\ nominator\\\\e.\ \frac{6}{13}\to\ half\ of\ 13=6.5 \ \textgreater \ 6-the\ nominator[/tex]