Margaret C. answered 10/21/19
College, AP, Honors, Very Effective, Patient Tutor. Chemistry Ph. D.
B - this is ethylene glycol. Even if you don't know the name or what it is - look at the intermolecular forces. It has two -OH groups that will form hydrogen bonding which is the strongest intermolecular force in molecular compounds. C also has hydrogen bonding but with only one -OH group the intermolecular forces will be weaker.