What characterizes fluorinated gases in terms of environmental impact?

The correct answer, indicating that fluorinated gases contribute significantly to the greenhouse effect, highlights the serious environmental impact these substances have. Fluorinated gases, which include hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6), are known for their ability to trap heat in the atmosphere, resulting in a high global warming potential (GWP). Some of these gases can have a GWP thousands of times greater than carbon dioxide when measured over a 100-year period.

Given their potency in contributing to the greenhouse effect, managing and reducing these gases is crucial for efforts aimed at combating climate change. This strong association with global warming distinguishes fluorinated gases from those with low global warming potential or those that are deemed harmless.

Other options do not accurately reflect the characteristics of fluorinated gases: they do not have low GWP, nor do they significantly contribute to ozone depletion, which is more associated with chlorofluorocarbons (CFCs). Additionally, the assertion that they are harmless to the environment contradicts the extensive research and consensus on their role in climate change.