Q: Fact 1: Gases released during the use of fossil fuels causes global warming. Fact 2: Oil is a fossil fuel. Given the two facts above, gases released during the use of what causes global warming?

Pick from: (i). coal. (ii). CO 2. (iii). Globe shaped cake warming. (iv). CO2. (v). oil. (vi). CFCs. (vii). Warming plates. (viii). Paper Mache Globe making.
The answer is:
(v).