fn single_choice<V: IntoView + 'static>(
idx: u16,
block: usize,
inline: bool,
orig_selected: bool,
disabled: bool,
responses: RwSignal<SmallVec<ProblemResponse, 4>>,
uri: DocumentElementURI,
feedback: RwSignal<Option<ProblemFeedback>>,
children: impl Fn() -> V + Send + 'static + Clone,
) -> impl IntoView