Answer :
Final answer:
The Gross Rating Points (GRP) is calculated as 36.9 by multiplying the number of ad appearances (3) by the Nielsen rating of the TV show CSI (12.3).
Explanation:
If an advertisement appears on CSI three times and CSI has a Nielsen rating of 12.3, the gross rating points (GRP) would be calculated by multiplying the number of times the ad is shown by the rating of the program. So, in this case, the GRP would be 3 (the number of times the ad is shown) multiplied by 12.3 (the Nielsen rating of CSI), which equals 36.9. Hence, the correct answer is c. 36.9.