Question

Even so, manufacturers must use ______
materials to produce plastics.
A- Natural
B- biodegradable
C- monomers

Answer 1

The best fit for the sentence is **C- monomers**.

So the complete sentence would read: "Even so, manufacturers must use monomers materials to produce plastics."

Monomers are the building blocks used to create polymers, which are the long chains that form plastics.