You are presented with the quiz "What product is likely to contain solvents that are harmful to living things?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "poison causes harm to living things" and "most disinfectants contain organic solvents that are flammable and poisonous". So, what's the best answer to the question?

Possible answers:
[1]. cigarettes;
[2]. Pesticides;
[3]. chlorofluorocarbons;
[4]. solid, liquid, gas;
[5]. baking soda;
[6]. disinfectants;
[7]. hydrogen peroxide;
[8]. vinegar;
Answer:
[6].