<p>It wasn't in my history textbook, but after a google search, this is what I found:</p>
<p><a href="http://www.desertusa.com/ind1/du_peo_ana.html%5B/url%5D">http://www.desertusa.com/ind1/du_peo_ana.html</a></p>
<p>It says they were originally hunters and gatherers (which is what I put), but then they turned to agriculture through irrigation, which I believe someone mentioned before. Out of that, it the agriculture through irrigation is correct.</p>
<p>anybody remember all the choices...?</p>
<p>I think it was :
Hunters/Gatherers
Mound builders
Farmers/ something
don't remember
don't remember</p>
<p>I'm pretty sure the answer is Farmers after reading that passage. There may be a small chance it is Hunters/gatherers.</p>