Before revision: A sugary drink tax, soda tax, or sweetened beverage tax (SBT) is a tax or surcharge (food-related fiscal policy) designed to reduce consumption of sweetened beverages .
After revision: by making them more expensive to purchase, which therfore reduces the demand for themA sugary drink tax, soda tax, or sweetened beverage tax (SBT) is a tax or surcharge (food-related fiscal policy) designed to reduce consumption of sweetened beverages .