Consider the following:I.Cigarette buttsII.Eyeglass lensesIII.Car tyres How many of them contain plastic?

1. A

   Only one

   Only one. Cigarette filters, lenses and tyres all contain plastic polymers.

2. B

   Only two

   Only two. The official count is all three.

3. C

   All the three

   All the three. Cigarette butts (cellulose acetate), eyeglass lenses (polycarbonate/CR-39) and car tyres (synthetic rubber plus polymers) all contain plastic.

4. D

   None

   None. Each listed item has a plastic component.

Summary. Official Set A key is (c) all three. A cigarette butt is mostly a cellulose-acetate filter. Spectacle lenses are plastic resins. A car tyre is natural and synthetic rubber with polymer fillers and a plasticised bead. Microplastics from all three are in the environment story. None of the three is plastic-free, so ‘only one’ or ‘only two’ under-counts.