The ratio of boys to girls in the 7th grade at GACA is 2 to 4. If there were 850 kids in the 7th grade, how many would you expect to be girls? Round to the nearest whole number.

The ratio of boys to girls is 2 to 4, which can be simplified to 1 to 2. Since there are 850 kids in total, the number of girls would be 2/3 of 850.

Number of girls = (2/3) * 850 = 567

Therefore, the expected number of girls would be 567 out of 850 kids.

So the answer is C. 567 girls out of 850 kids.