The policy targets cutting ______ emissions from industry.

• A. Methane
• B. Carbon
• C. Oxygen
• D. Nitrogen

Answer: (B)

The phrase here relies on a common policy term: carbon emissions. In environmental policy, “carbon emissions” is the standard way to refer to carbon-containing gases released by industry, especially carbon dioxide from burning fossil fuels and other processes. It captures the broad impact of industry on the atmosphere in terms of CO2, which is the main target in many climate policies.

Methane is indeed a greenhouse gas, but policies usually specify it as such (methane emissions) when discussing that particular gas. Oxygen and nitrogen aren’t the focus in this context; air is mostly nitrogen and oxygen, and policies don’t target “nitrogen” emissions in this broad sense. So the best fit is carbon emissions because it reflects the general, widely used label for industry-related CO2 and related carbon-containing emissions.