Fact 1: Pollination is the fertilization step in the sexual reproduction of plants.

Fact 2: Clean plants are healthy plants.

Given the two facts above, answer the question "pollination is the fertilization step in something that is healthy when what?" with the following options: 
- made
 - autumn
 - Summer
 - edible
 - clean
 - flowers
 - small
 - seeds


 

     clean    