In a follow up to this YouTube video requested by the original poster of the question in the fluent forms community that inspired it, in this video I go into more details about how I would achieve this with some custom JavaScript, CSS and passing URL parameters this is a fully working example of dynamic test based on a binary 1/0 setup to display certain paragraphs a heading with a span class to show the BMI results and dynamic coloured blocks both to the normal BMI scale and in addition for the other blocks based on a 0-100 percentage range.
I did run into a problem as in this example the user wants to use a conversational form at the time of writing it doesn’t appear a conversational form is capable of hidden fields [ff_force_hide] doesn’t work and the documentation makes it clear at the time of writing that they don’t apply to conversational classes – Fluent form Documentation
Hopefully this of some use to others in the future you can download the JavaScript, CSS and some parameter instructions from my gist which is available here