use bees to pollinate the flowers reproduce by cross-pollination of different peach trees increase the diversity in the peach tree ensure that the peach tree reproduces asexually
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A particular peach tree produces peaches that are more resistant to disease than other peaches. What method would reproduce these exact peaches?
Possibilities:
- use bees to pollinate the flowers
- reproduce by cross-pollination of different peach trees
- increase the diversity in the peach tree
- ensure that the peach tree reproduces asexually

ensure that the peach tree reproduces asexually