What nutrition label...? Providing it may be of some help!
I think it might be hormones not sure.
Answer: decrease in price of soda.
Explanation:
Soda has been found to be associated with tooth decay, and high risk of cardiac diseases and disorder like diabetes type2.
If large population decides to stop the consumption of soda due to health issues then the demand for soda in market will decrease. This will eventually leads to drop in price of soda in the market.
The answer would be, Stop smoking, walk to school instead of driving to school, use recyclable products.