which of these research questions sounds the best/easiest?

which of these research questions sounds the best/easiest?I have chosen the use of behavior modification techniques in the cessation of cigarette smoking as my topic for my paper... What one of the 3 questions I came up with sounds like the best/easiest??

My research question is: Is behavioral modification an effective means of quitting smoking in people who have previously tried using medication and failed?

Is behavioral modification paired with smoking cessation medication the most effective means of quitting?

Is the exclusive use of behavioral modification therapy as effective as the exclusive use of smoking cessation aids/medications?

Elena Como
This one sounds easiest to prove: "Is behavioral modification an effective means of quitting smoking in people who have previously tried using medication and failed?"

The others sound much harder, because they're comparing different methods and that would be really hard to show.

Know better? Leave your own answer in the comments! Smoking Cessation - Quit Smoking Today. Smoking Cessation helps smokers kick their nicotine addiction, providing tools, information and support for people quitting smoking.

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