Which of the following most logically completes the passage?

Methane emissions are a significant concern for environmentalists, but another category, perfluorocarbons (or PFCs), is among the lesser-known types of greenhouse gas. A study of refrigerant gases showed that PFCs decompose into harmless compounds relatively quickly. Therefore, if PFCs were banned, the level of greenhouse gas pollution would be greatly reduced, especially since.

Answer Choices

Correct answer marked below

the substances used to replace PFCs are somewhat more expensive than PFCs

PFCs cause the atmosphere to trap heat thousands of times more per PFC particle than methane does

Correct

the study of PFCs found that one of the compounds into which PFCs decompose is a strong acid

the reason PFCs were not banned in the past is that they do not have any impact on the ozone layer

corporations often delay compliance with bans on substances until after sanctions are in place

See the full step-by-step explanation

You can see the correct answer above. Sign in for free to unlock the complete worked solution.

Track your performance and improve

Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.

Start for free Sign in

Explanation

Preview

Official Explanation

Official

To determine the best completion for the passage, we need to consider the context provided. The passage discusses the potential benefits of banning PFCs due to their quick decomposition into harmless compounds. The key point is that banning PFCs would significantly reduce greenhouse gas pollution. Among the options, the statement that 'PFCs cause the atmosphere to trap heat thousands of times more per…

Read the full explanation

Create free account Sign in

Comments

MdMar 27, 2025

Greatt

AnhFeb 6, 2025

Thank you very much!

LenaJun 2, 2024

Amazing

TarekMar 6, 2024

thank you for sharing

What this question tests

What it tests

Whether you can complete the last sentence of an argument in a way that is logically consistent with it.

Common trap

Choosing an option that sounds plausible but contradicts the argument or introduces new information.