I think the answer is B. statistic
The answer is their because "the girls" is plural, meaning more than 1 girl is being addressed. Therefore, the answer cannot be her.
Explanation: CDC works 24/7 to protect America from health, safety and security threats, both foreign and in the U.S. Whether diseases start at home or abroad, are chronic or acute, curable or preventable, human error or deliberate attack, CDC fights disease and supports communities and citizens to do the same.
<span>It expresses more complete ideas.</span>
In some cases yes and some no