through mutation through pollination through natural selection through asexual reproduction
I gave my students this multiple choice question: The trait for flower color is highly variable among certain species of rose plants, leading to the formation of flowers of different colors. How did the flower color variation in rose plants come about?

Only one answer is correct among these 4 choices:
- through mutation
- through pollination
- through natural selection
- through asexual reproduction

Could you tell me which one is correct?

through mutation