<p>Scientists are seeking better ways to predict damage from earthquakes, and they are using supersensitive recorders to study how rock breaks and movies in an earthquake.
VS
Scientists seeking better ways to predict damage from earthquakes are using supersensitive recorders to study how rock breaks and movies in an earthquake.
I don't understand why the 2nd option is correct.... And I don't see why the 1st option is wrong, either.
Please help me out!!!
Thanks.</p>
<p>The second one is more concise but I dont see anything necessarily wrong with the first option u apparently copied down the questions or answer choices incorrectly ‘study how rock breaks and movies’ ?? And no way is the first choice an incorrect choice on a real exam simply because the latter is more concise u must be usingsome barrons book or pr</p>
<p>The issue is not conciseness. The second sentence is more informative. When you join two clauses with “and,” you leave it up to the reader to decide if there is a relationship between the two ideas. The second sentence modifies a clause with a participial phrase. This often (not always) indicates a cause-effect relationship, and that is what you see here.</p>
<p>I’m guessing this comes in one of those sections where they are looking for the best sentence, not the correct sentence.</p>
<p>The second option is correct because the first option has an issue with the ambiguous word, “they”. The “they” in the first sentence could refer to either “the scientists” or the “earthquakes”. The second option has no such issue and is hence correct.</p>
<p>Thanks guys, I got it! 
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