which synthetic and natural polymers can be used to make thread or rope?\no vulcanized rubber and starch\no…

Brief Explanations:

Nylon is a synthetic polymer commonly used for making threads and ropes due to its strength. Cellulose is a natural polymer found in plants, and fibers from it can be used to make threads and ropes. Vulcanized rubber is more rigid and not typically used for thread - rope making, and starch is not suitable for this purpose either.

Answer:

C. nylon and cellulose