The question asks which among the given options is a biodegradable polymer. To determine this, we need to understand what a biodegradable polymer is:
- A biodegradable polymer is a polymer that can be decomposed by natural biological processes. These types of polymers break down into carbon dioxide, water, and biomass under the action of microorganisms.
Let's analyze each option:
- PVC (Polyvinyl Chloride): This is a synthetic polymer that is not biodegradable. It is used in applications like pipes and cables and does not decompose easily.
- Freon: This is a trade name for a group of chemical compounds used as refrigerants. They are not polymers and are not biodegradable.
- Nylon: A synthetic polymer used in fabrics and textiles. It is not biodegradable because it is resistant to biological breakdown.
- PHBV (Polyhydroxybutyrate-co-hydroxyvalerate): This is a biodegradable polyester. It is produced by certain bacteria and decomposes in the presence of microorganisms.
From this analysis, PHBV is the correct answer as it is the only biodegradable polymer among the options listed.