I dont know if you got the answer already but I think its the first one third and last! I dont know if its right.
Answer:
I think people should pay more attention to sea turtles.
Explanation:
I think I got this one right because it never said anything about it being caused by humans, it didn't say that people should leave them alone if they want to help them, and they didn't say that they are awesome.
The preposition in this sentence is
week right
Well, Odysseus was going to kill him, until he realized that the giant, named Polyphemus I believe, was the only thing in the cave strong enough to move the boulder blocking them from getting out.
Hope this helps!