Fact 1: Many plants respond to the days growing shorter in the fall by going dormant.

Fact 2: Fall starts in September and is windy and dry.

Given the two facts above, answer the question "when do plants respond to shorter days by going dormant?" with the following options: 
- September
 - July
 - trees
 - legumes
 - Conifers
 - Exfoliation
 - Winter
 - Summer


 

 September        