questionnaire

I wish you luck in your endeavor. I must tell you that I found your survey obscure and unintelligible. A book was presented, along with several choices below. There was no way to indicate having read more than one of the listed choices, and no guidance about how to answer in this situation. There was no way to indicate having read the index book, which was sometimes listed as one of the choices, and sometimes not. Maybe there is a method here, but it was not possible to discern it.