Question

polymers are long chains of (1 point)
o crystals.
o electrons.
o atoms.
o molecules.

Explanation:

Polymers are large molecules made up of repeating structural units (monomers) linked together. Crystals are solid structures with ordered atoms, electrons are subatomic particles, and atoms are the basic units of matter, but polymers are long chains of molecules (specifically, monomer molecules linked to form polymer molecules).

Answer:

molecules.