See the answer below.
Work Step by Step
A) 1,5 pentanediol, because it has two nonsymmetrical sites where hydrogen bonding occurs therefore it's the most polar of the three. B) Propyl ethyl ether, because it doesn't have hydrogen bonding, therefore it's the least polar. C) 1,5 pentanediol then 1 pentanol then propyl ethyl ether, in order of decreasing polarity.