The amount of carbon dioxide a person is responsible for putting into the atmosphere is called __________.

• A. Carbon debt
• B. Carbon tax
• C. Carbon load
• D. Carbon footprint

Answer: (D)

The amount of CO2 a person is responsible for putting into the atmosphere is called the carbon footprint. This term captures the total greenhouse gas emissions attributed to an individual or household, including both direct actions (like burning fuel in a car or heating a home) and indirect ones (such as electricity use and the production of goods and services you buy). It’s usually expressed in metric tons of CO2-equivalents per year and is used to understand personal environmental impact and guide efforts to reduce emissions.

The other terms refer to different ideas. A carbon tax is a government policy that places a price on carbon emissions to incentivize reductions. A carbon debt describes accumulated past emissions or a liability related to them. Carbon load is not a standard, precise term for measuring an individual’s emissions.