To find out how many people voted, you can calculate 33% of the 2,500 eligible voters.
The calculation is as follows:
\[ \text{Number of voters} = 33% \times 2,500 = \frac{33}{100} \times 2,500 = 0.33 \times 2,500 = 825 \]
So, approximately 825 people voted.
The correct answer is: a. 825