Q: You are presented with the quiz "Where is moss the strongest?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "moss causes chemical weathering" and "chemical weathering is strongest in tropical environments". So, what's the best answer to the question?

OPT:
1). near the shoreline.
2). looseness of dirt or compost.
3). The area was once underwater.
4). It used to be covered by water.
5). dead organisms.
6). tropical environments.
7). our nearest star.
8). the body's largest organ.
A:
6).