You are presented with the question "What effect could more active plate tectonics have on the earth?" and the following answer choices: 
- rapid expansion
 - Decreased precipitation
 - a tree falling
 - the production of heat
 - Lower average temperature
 - Physical weathering
 - a lot of human deaths
 - Plant growth is reduced

Now knowing that the movement of tectonic plates causes volcanic eruptions and large volcanic eruptions can decrease (reduce)the earth's average temperature by (a) emitting particles into the stratosphere, thereby increasing the albedo, choose the best answer.


 

     Lower average temperature    