Final answer:
Hydrofluorocarbons (HFCs) do not damage the stratospheric ozone because they contain no chlorine or bromine atoms that can lead to ozone depletion.
Step-by-step explanation:
The refrigerant that will not damage stratospheric ozone is C) HFCs (hydrofluorocarbons). Unlike chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), HFCs do not contain chlorine or bromine atoms, which are responsible for depleting ozone. Without these atoms, HFCs, such as CH₂FCF₃, do not contribute to ozone layer breakdown, as they do not produce radical species capable of ozone molecule destruction in the stratosphere.