Which of the following constitutes litter according to waste management definitions?

Litter, as defined in waste management, typically encompasses a range of waste types, which includes both decayable and nondecayable materials. This means that litter isn't restricted to one type of waste but rather can consist of various items that have been improperly disposed of in public spaces or environments.

The inclusion of decayable waste—such as food scraps or biodegradable materials—alongside nondecayable waste, like plastics or metals, reflects the reality that litter can be diverse. Litter causes not only visual pollution throughout communities but also environmental hazards as different materials can contribute to ecosystem degradation in various ways.

Therefore, the correct understanding that litter constitutes a mix of decayable and nondecayable waste aligns with comprehensive waste management practices which seek to address all forms of littering in efforts to promote cleaner and healthier environments.