Select from:
(1). loose soil
(2). animals
(3). with their fur
(4). In the blood
(5). Behind teeth
(6). On the surface
(7). In the mouth
(8). an organism's body
Given those answer options, answer the question: You are presented with the quiz "Where do ticks live?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "some parasites live on the surface of their host" and "ticks are blood sucking parasites that attach to the skin". So, what's the best answer to the question?
A:
(6).