The correct answer is C. These aids ease nicotine withdrawal, increasing the likelihood of success.
Step-by-step explanation:
Quitting aids are substances or products that help addicts to overcome addiction to a substance by reducing craving or helping users to deal with withdrawal symptoms. In the case of smoking, quitting aids help users to leave their dependence to nicotine, which is the stimulant in cigarettes responsible for addiction and dependence. Additionally, the use of quitting aids is recommended in many cases because even if these do not completely guarantee a successful nicotine withdrawal they can make the process easier and increase the likelihood of success (Option C.)