If many plants respond to the days growing shorter in the fall by going through a rest period, then what do many plants do to respond to the shorter days in fall?

Answer choices:
- go through a resting period
 - changing the phase
 - Release energy
 - Generating heat
 - produce more pollen
 - colder and wetter
 - grow taller
 - make more chlorophyll

 

 go through a resting period         