Which of the following polymers can have strong intermolecular forces?

Nylon and polyester are basically well known thread forming fibers which have already identified themselves in the field of textile. Possession of high tensile strength and high melting point have made them their identity in the textile fields. They have strong intermolecular forces like hydrogen bonding. Force of attraction between the molecules of rubber is Vander Waal force which is the weakest force. Usually nonpolar materials such as polystyrene will have relatively weak attractive interactions in contrast to polar molecules. Hence we conclude the answer.