Answer
We can rank the orientations according to the angle between the electric dipole moment and the electric field:
$(4) \gt (3) \gt (1) \gt (2)$
Work Step by Step
In the Review & Summary on page 651, the text states: "This potential energy is defined to be zero when $p$ is perpendicular to $E$; it is least ($U = -pE$ ) when $p$ is aligned with $E$ and greatest ($U = pE$) when $p$ is directed opposite $E$."
Therefore, the smaller the value of the potential energy, the smaller the angle between the directions of $p$ and $E$
We can rank the orientations according to the angle between the electric dipole moment and the electric field:
$(4) \gt (3) \gt (1) \gt (2)$
