Which of the following polymers has the strongest interparticle forces?

$\begin {array} {1 1} (a)\;Elastomers & \quad (b)\; Thermoplastics \\ (c)\; Thermosetting\: polymers & \quad (d)\;Fibers \end {array}$

A fibre or fiber is a piece of material that is long, thin and flexible, like a length of thread. A Plant fibres are the basis of fabric such as cotton.
Ans : (d)