Which of the following gases is a supporter of combustion?

Select the option that does NOT belong to the same category as the others based on chemical nature or elemental status (e.g., noble gas vs greenhouse/triatomic gases): Ozone, Carbon dioxide, Helium, Oxygen

The mass percentage composition of three gases in a gas mixture is approximately CO2: 60%, SO2: 30%, NO2: 10%. If the total pressure in the container is 3.00 atm, what is the partial pressure of SO2 in the mixture? (Molar masses: CO2 = 44 g/mol, SO2 = 64 g/mol, NO2 = 46 g/mol)