To find out how many bags of chips the school soccer team needs to sell to raise $1,000.00, you can use the formula:
\[ \text{Number of bags} = \frac{\text{Total amount needed}}{\text{Price per bag}} \]
Substituting the known values:
\[ \text{Number of bags} = \frac{1000}{2.50} \]
Calculating that:
\[ \text{Number of bags} = 400 \]
Thus, the school soccer team needs to sell 400 bags of chips to raise $1,000.00.
The correct answer is C. 400 bags.