The correct option is that both Statement-I and Statement-II are correct and that Statement-II explains Statement-I. Chewing gum is often cited as a source of environmental pollution due to the long decomposition time of its synthetic components, primarily those containing plastics such as polyisobutylene. This aspect is particularly significant in the context of urban waste management, as improperly discarded chewing gum contributes to litter and contaminates ecosystems, highlighting the importance of understanding the environmental impact of consumer products.