You are presented with the question "What can have a negative impact on photosynthesis?" and the following answer choices: 
- disease
 - Smoking
 - Pollution
 - seed dispersal
 - solar eclipse
 - scattered light
 - cell division
 - mutation

Now knowing that darkness has a negative impact on photosynthesis and during a solar eclipse , the sky can get quite dark, choose the best answer.


 

     solar eclipse    