Answer
c. Methyl bromide
Step-by-step explanation
Ozone-depleting substances are:
i. chlorofluorocarbons (CFCs)
ii. halon.
iii. carbon tetrachloride (CCl4)
iv. methyl chloroform (CH3CCl3)
v. hydrobromofluorocarbons (HBFCs)
vi. hydrochlorofluorocarbons (HCFCs)
vii. methyl bromide (CH3Br)
viii. bromochloromethane (CH2BrCl)
Therefore the correct answer to you question is option:
c. Methyl bromide