Which of the folowing is bio-degradable polymer?

Mostly all polymeric materials are non-bio degradable and as such the discarded plastic materials made out of these polymers reate environmental pollution. The chief among the polluting plastic material is polythene. The use of polythene bags, popularly called carry bags and their discardance in the environment is a singular nuisance for municipal cleaning department Which of the following is a bio degradable polymer ?

Which one of the following is a bio-degradable polymer?

Which of the following is a nio degradable polymer

Which of the following are non bio-degradable pollutants?