Clearly differentiating between radio buttons and checkboxes in funnel

As a complete UX beginner, I am having trouble differentiating pages containing 1-choice-only radio buttons and multiple-choices-possible checkboxes. I feel like there isn't enough to clearly distinguish the two to make it as easy and clear as possible for the user.

Below are two screens from our (work in progress) lead funnel, one requiring a single choice, and one allowing for multiple choices to be selected:

I have implemented clear radio buttons and checkboxes, but feel like it would be too much of an assumption to think that everyone will "get" this. Is this clear enough, or should I put in more measures to help the user immediately understand what is expected of them on the page?