Correct Answer: The total emissions of greenhouse gases by a country

Solution : The correct answer is (a) The total emissions of greenhouse gases by a country

The carbon footprint is a measure of the total amount of greenhouse gases, primarily carbon dioxide (CO2), emitted directly or indirectly as a result of human activities. It quantifies the impact of human actions on climate change and represents the amount of greenhouse gas emissions attributed to individuals, organizations, products, or countries.

The carbon footprint takes into account emissions from various sources, including the burning of fossil fuels for energy production, transportation, industrial processes, and deforestation. It is typically measured in metric tons of carbon dioxide equivalent (CO2e) and provides a way to assess and compare the environmental impact of different activities and entities.

Reducing carbon footprints is an important goal in mitigating climate change. Efforts to reduce carbon footprints include adopting energy-efficient practices, using renewable energy sources, improving transportation systems, implementing sustainable agricultural practices, and promoting forest conservation and reforestation to absorb carbon dioxide from the atmosphere.