A number rounds to 720000 (to the nearest thousand) if it is between 719500 and 720499 (inclusive). Check each option.<br><br>
&bull; 7024445 &rarr; 7024000 (too large)<br>
&bull; 724499 &rarr; 724000 (too large)<br>
&bull; 720455 &rarr; 720000 (the hundreds digit is 4, round down) &check;<br>
&bull; 719499 &rarr; 719000 (the hundreds digit is 4, round down)<br><br>
Final Answer: C: 720455