Answer:
A. argue
Explanation:
The best replacement for the word <em>say</em> in the sentence is argue because that means that the opinion or idea is presented with a reason, which is stated in the line <em>'without any organization, the abundance of information available could be overwhelming and therefore stifle creativity.'</em>
<u>Whine</u><em> - complain, cry, wail.</em>
Express<em> - state, show, tell</em>
<u>Admit</u><em> - accept, agree, recognize</em>