Hello,

I work with a serious and professional study regarding female pleasure and habits of masturbation. I want to create a questionnaire for users to fill. It is very important that the forum learning is easy to fill, it should be of the check box type and the user should never have to write any text their self. The should be around 20 questions. The questions should be focus on clitoris.
Focus areas:
When did they start masturbating?
How often do you they masturbate?
Which things affects their masturbation frequency?
How do they stimlulate clitoris during masturbation?
Do you they prefer to stimulate clitoris through clitoris hood or removing clitoiral hood for access clitoris stimulation?
Does the way their stimlulate clitoris change during the masturbation session?
When stroking clitorial hood or clitoris which specific areas of clitoris and clitoral hood do you they prefer to stimulate most?
How long time does  masturbation session take?
How do they change their masturbation technique if they wanna do a masturbation that is even better?
How do they change their masturbation technique if they wanna have a stronger orgasm?
Which is the key elements when it comes to masturbation to having a climax?

Help me create the questionnaire with detailed questions in those areas but that user can only use type check box answers.