Final answer:
Human tissue and contaminated solid wastes should be treated as biohazardous waste, typically requiring sterilization before proper disposal as hazardous waste to mitigate health and environmental risks.
Step-by-step explanation:
The correct method for disposing of human tissue and contaminated solid waste is not directly listed in the provided options. However, such waste is typically considered biohazard and should be disposed of according to specific regulations designed to protect public health and the environment. It is crucial to deal with this type of waste as hazardous waste because it poses potential risks of infection or illness. Depending on local regulations, this usually involves sterilization (for example, via autoclave) before disposal. After being rendered harmless, the waste may then be included in the regular waste stream or disposed of in designated hazardous waste facilities. Incineration and landfill, the two primary methods of waste disposal in the United States, have significant drawbacks when dealing with hazardous materials such as potential air pollution and groundwater contamination.