Answer:
The correct answer is - polyethylene.
Step-by-step explanation:
Polyethylene is the most lightweight, flexible, efficient, and inexpensive material among all the given options. It is a very durable thermoplastic material with a variable crystalline structure.
It is the most used plastic worldwide due to its inexpensive and efficient quality. It is used to make films, wrap, shopping bags, bottles, and many more products.
Thus, the correct answer is - polyethylene.