With 24 bits per pixel, the number of different color possibilities can be calculated using the formula \(2^{n}\), where \(n\) is the number of bits. In this case:
\(2^{24} = 16,777,216\)
Therefore, the answer is 16,777,216 different color possibilities per pixel. However, it looks like the answer choices provided do not include this number, but the closest option you provided is 16,000,000.
If you need to select among the options given, then 16,000,000 would be the most accurate choice based on common rounding.