What type of waste is characterized by being "no longer usable for its original intended purpose"?

The correct answer pertains to hazardous waste, which is defined by its inability to be reused for its original intended purpose due to its potentially harmful properties. Hazardous waste encompasses materials that can be toxic, reactive, ignitable, or corrosive, making them unsafe for general disposal or repurposing.

In the context of waste management, understanding the characteristics of hazardous waste is crucial, as it requires special handling, treatment, and disposal procedures to mitigate risks to health and the environment. This distinguishes it from other types of waste like biodegradable, recyclable, and compostable waste, which can either break down naturally, be repurposed, or utilized in composting processes, respectively.