(1) Has her department undertaken any (a) research and/or (b) investigation into (i) the environmental impact of plastic shopping bags and (ii) potentially banning the use of plastic shopping bags; if not, why not; if so, what were the findings of such (aa) research and/or (bb) investigation; (2) whether her department has a position with regard to the banning of plastic shopping bags; if not, why not; if so, what are the relevant details of such position?