What type of items are considered hazardous waste?

Hazardous waste is typically defined as waste that poses substantial or potential threats to public health or the environment. The correct choice identifies electrical items with harmful materials, such as batteries, circuit boards, or other components that may contain heavy metals like lead, mercury, or cadmium. These substances can be detrimental if improperly disposed of, as they can leach into the soil and water, leading to contamination and health risks.

Other types of waste listed do not inherently qualify as hazardous. For example, old furniture could be reused or recycled; food waste is generally biodegradable and not considered hazardous; and metal scraps, while potentially recycled, do not typically meet the criteria for hazardous waste unless they are contaminated with hazardous substances. Understanding the classification of waste is crucial for effective waste management and environmental protection.