How has the disposal of municipal solid waste (MSW) changed since the 1960s?

The correct answer highlights a significant trend in the management of municipal solid waste (MSW) over the decades. Since the 1960s, there has been increasing awareness and implementation of waste reduction strategies, environmental regulations, and the development of waste-to-energy facilities. As a result, the practice of burning waste has become more regulated and controlled, often involving a focus on converting waste into energy rather than simply incinerating it.

While incineration still occurs, the emphasis has shifted towards more sustainable practices. This includes recycling and composting initiatives, which further contributes to the reduction of waste being burned. The advancements in waste-to-energy technologies and stricter emission standards reflect a collective effort to minimize the environmental impact of waste disposal methods.

This option correctly encapsulates the evolution in the approach to handling municipal solid waste, illustrating how the trend has moved away from merely burning waste to integrating more sustainable waste management practices.