Answer the following question: You are presented with the quiz "What can burn the skin?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "alaser is used for producing light" and "also, very powerful, high concentration lasers can burn or cut the skin". So, what's the best answer to the question?

Pick from: (1). cream; (2). light; (3). ointment; (4). the sun; (5). Lukewarm water; (6). cigars; (7). Acids; (8). NaCl;
Answer:
(2).