Answer: Your 1st answer corect! Your 2nd answer is wrong. The answer is ethene is a molecule. 3rd answer is an extended strucuture with repeating subunits
Step-by-step explanation:
polyethylene is nothing more than a long chain of carbon atoms, with two hydrogen atoms attached to each carbon atom
called branched/low-density polyethylene, or LDPE
When there is no branching, it is called linear polyethylene, or HDPE.