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
Short paragraphs, un varied punctuation, the redundant use of the subjects name
Both the first and last one
The right answer for the question that is being asked and shown above is that: "vintage computers." The topic that is narrow enough to be the subject of a descriptive essay is the idea of <span>vintage computers. It is very narrow that it talks about the specifics.</span>