• Properties and Applications of Polypropylene (PP):
• Polymer Characteristics:
• Low density ($0.90 - 0.91\text{ g/cm}^3$) and high melting temperature ($160 - 165^\circ\text{C}$), allowing retort sterilization and microwave heating.
• Packaging Forms:
• Polypropylene is utilized in both rigid and flexible forms—rigid bottles, injection-molded closures, thin-walled thermoformed tubs, as well as flexible oriented films (BOPP) for snack pouches and bread packaging.
• Therefore, asserting that it is used only in rigid forms is completely incorrect.
• Conclusion: It is used only in rigid forms as in bottles (Option 2).

Correct option: (2) It is used only in rigid forms as in bottles