Answer
We can rank the points according to the magnitude of the angular momentum about them:
$b \gt c = d \gt a = e$
Work Step by Step
We can write a general expression for the magnitude of the angular momentum:
$L = r_\perp~mv$
We can write an expression for the magnitude of the angular momentum about each of the five points:
point a:
$L = r_\perp~mv = 0$
point b:
$L = r_\perp~mv = 3mv$
point c:
$L = r_\perp~mv = 2mv$
point d:
$L = r_\perp~mv = 2mv$
point e:
$L = r_\perp~mv = 0$
We can rank the points according to the magnitude of the angular momentum about them:
$b \gt c = d \gt a = e$
