Answer the following question: Fact 1: The emission of sulfur dioxide causes acid rain. Fact 2: Most sulfur dioxide comes from the combustion of oil and coal. Given the two facts above, what causes acid rain?

Choose your answer from:
[1]. burn
[2]. oil
[3]. coal
[4]. lung
[5]. DDT
[6]. tar
[7]. Cars
[8]. wind
Answer:
[2].