Most of the questions in the questionnaire are restrictive, leading, and manipulative. The effect is to force respondents into apparent consent to the policy choices set out in the Green Paper. A polling institute which made use of questions of this kind would quickly be challenged and discredited.
My reading of the above: "A polling institute would have to ask better questions to maintain credibility."
=What are the better questions?
But maybe I shouldn't be in this conversation at all? (I'm don't think I'm being helpful.) Don't fight forces, use them R. Buckminster Fuller.
All questions are helpful. Convince yourself, then convince a friend, then convince an enemy. You're playing the role of friend needing to be convinced. Nothing is 'mere'. — Richard P. Feynman