You need to write the main idea of each paragraph of the story and if all the mean ideas are about the same topic then you got the main or central idea of the story.
Well, let's see... I don't know what a coordinating conjunction is off the top of my head, but I know B isn't the answer, since 'independent' means 'highly capable of handling oneself'. C <em>certainly</em> isn't the answer, simply because you can see by this answer they obviously do combine with a dependent clause from time to time. That leaves us with D and A, which both leave the same term. However, I do believe I can use the word preceding <em>conjunction</em>, which is <em>coordinating</em>, to realize that 'and,' 'but,' and 'or' are coordinating conjunctions. Seriously, D cannot be the answer because not every sentence starts with any of those. So your answer is A.
I would do that but what is the question
Answer:
because the atmosphere shields us from radiation from the sun. also, when you put on sunscreen, the risk for skin cancer decreases.
