Fact 1: Aplant requires photosynthesis to grow.

Fact 2: Hexazinone inhibits photosynthesis.

Given the two facts above, answer the question "What inhibits a plant to grow?" with the following options: 
- viruses
 - hypothyroidism
 - hexazinone
 - Dehydration
 - cigarettes
 - salinity
 - Smoking
 - hyperthyroidism


 

   hexazinone      