Answer
$A=G\lt B=D=F\lt E\lt C$
Work Step by Step
We know that in the given figure the points G and A have the same potential energy and that at these points the potential energy is maximum but the kinetic energy is zero. For all other points, we should keep in mind that the lower the potential energy, the higher the kinetic energy and hence the speed as well. Now we can rank the given points in order of increasing speed as: $A=G\lt B=D=F\lt E\lt C$