For this case we have:
Option A:
[tex]\frac {45} {45} = 1[/tex]
So:
[tex]1 = 1\\\frac {45} {45} = 1[/tex]
Option B:
[tex]\frac {6} {3} = 2[/tex]
So:
[tex]1 <2\\1 <\frac {6} {3}[/tex]
Option C:
[tex]\frac {2} {7} = 0.29[/tex]
So:
[tex]0.29 <1\\\frac {2} {7} <1[/tex]
Option D:
[tex]\frac {64} {23} = 2.78\\2.78> 1\\\frac {64} {23}> 1[/tex]
Answer:
[tex]\frac {45} {45} = 1\\1 <\frac {6} {3}\\\frac {2} {7} <1\\\frac {64} {23}> 1[/tex]