What type of gases are F-Gases primarily used in?

F-Gases, which include hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6), primarily serve significant roles in refrigeration and air conditioning systems. These gases are favored for their ability to efficiently absorb and release heat, which is essential for cooling applications. Their unique properties make them effective as refrigerants, allowing them to replace ozone-depleting substances in many cooling systems.

In the context of refrigeration and air conditioning, F-Gases are essential for creating and maintaining appropriate temperatures in various settings, including commercial, industrial, and residential environments. Their efficiency and stability under different temperature and pressure conditions make them well-suited for these applications.

While F-Gases might be found in other contexts, like industrial processes, household cleaning products, or automotive fuels, such usages are not as predominant or critical as their role in refrigeration and air conditioning. This specificity to cooling systems underlines why the correct answer is C, highlighting the crucial role of F-Gases in maintaining performance and compliance with environmental regulations in refrigeration and air conditioning systems.