Which one of the following activities does not reflect responsible behaviour with regard to waste disposal?

Question

$\begin{array}{1 1} \text{a. Goods carried in paper bags or cloth bags } \\ \text{ b. Waste collected in polythene bags for disposal} \\ \text{ c. Waste separated into those that degrade and those that do not} \\ \text{d. Making handicrafts with used up notebooks.} \end{array}$