You are presented with the quiz "Which of the following can release harmful substances into the environment?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "pesticides can cause pollution" and "pollution is the release of harmful substances into the environment". So, what's the best answer to the question?
OPTIONS:
(A). vehicles.
(B). cigarettes.
(C). fossil fuels.
(D). Thunderstorms.
(E). Photosynthesis.
(F). Pesicides.
(G). Tree sap.
(H). mines.
Answer:
(F).