The correct option is B 2
A prime number is a whole number greater than 1. It has exactly two factors, that is, 1 and the number itself.
The first few prime numbers are: 2, 3, 5, 7, 11, 13, 17, ...
There is only one even prime number, that is, 2.
Thus, Nadia's bouquet would only have 2 roses, and the correct answer is 2.