Using some smokers quit by gradually decreasing their dependence on nicotine. answers:

a. stimulants
b. nicotine substitutes
c. inhalers
d. nicotine inhibitors

Nicotine substitutes help some smokers quit by gradually decreasing their dependence on nicotine - B. 

The best way of cutting down and lowering your dependence to nicotine is to use substitutes and to gradually lower on the substitute as well. This enables you to lower the desire for nicotine. 

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.