Answer:
the anser is a simple sentence
Explanation:
I'd say 6 because the main idea is how volcanoes are destructive but they can also help us and sentence 6 says that exact thing
1.) Correct
2.) Correct
3.) The boy had trouble withthe decimal point when multiplying. He always put it in the wrong place.
4.) Correct
5.) I mislead my car keys. My house keys were also gone
6.) Correct
7.) Correct
8.) I generally like the climate of the area where I live. I do not enjoy sub freezing winter temperatures.
9.) Correct
10.) Correct
The answer is most likely A because it looks like "over" is the only preposition used in any of these sentences.
I think it is D - supporting detail, just a guess tho