BB question - pg 416 number 20

<p>uggh i do not understand :(! My grammar suckss</p>

<p>question 20, pg 416:</p>

<p>Conflicts between land developers and conservationists have repeatedly **arose<a href="A">/b</a> , causing congress to reconsider legislation that prohibits building within habitats of endangered species.</p>

<p>the error is A, the word "arose", but i do not understand what I don't understand why.</p>

<p>I have responded in my Writing question consolidation thread: <a href=“http://talk.collegeconfidential.com/sat-preparation/782128-post-writing-questions-here.html[/url]”>http://talk.collegeconfidential.com/sat-preparation/782128-post-writing-questions-here.html&lt;/a&gt;&lt;/p&gt;

<p>thank you silverturtle</p>