JSFiddle - React, Tailwind, and code Playground

CSS

b {
    font-size: 1.2em;
    margin: .5em 0 1em;
    display: block;
}
lable {
    display: block;
}
button {
    border-radius: .2em;
    margin: 1em 0;
}
.correct {
    color: green;
}
.wrong {
    color: red;
}

JavaScript

var allQuestions = [{
    question: "Who is Prime Minister of the United Kingdom?", 
    choices: ["David Cameron", "Gordon Brown", "Winston Churchill", "Tony Blair"], 
    correctAnswer:0}];
// global variables
var wrapper = document.createElement('div');
var choices = allQuestions[0].choices;
var b = document.createElement('b');
var sub = document.createElement('button');


// wrapper
document.body.appendChild(wrapper);

// actual question
b.appendChild(document.createTextNode(allQuestions[0].question));
wrapper.appendChild(b);

// choices
for(var i =0; i < choices.length; i ++){
    var lb = document.createElement('lable');
    var inp = document.createElement('input');

    inp.setAttribute('type', 'radio');
    inp.setAttribute('name', 'choice');
    inp.setAttribute('value', i);
    lb.appendChild(inp);
    lb.appendChild(document.createTextNode(choices[i]));
    wrapper.appendChild(lb);
}

// submit button
sub.appendChild(document.createTextNode('Submit'));
sub.setAttribute('id', 'submit');
wrapper.appendChild(sub);
var submit = document.getElementById('submit');

// function to run after submit
submit.addEventListener('click', function(){
    var p = document.createElement('p');
    var radios = document.getElementsByName('choice');
    var chosen;
    for (var c=0; c < radios.length; c++){
        if(radios[c].checked){
            chosen = radios[c].value;    
        }
    }
   if(chosen == allQuestions[0].correctAnswer){
       p.appendChild(document.createTextNode('Correct!'));
       p.setAttribute('class', 'correct');
       wrapper.appendChild(p);
    } else {
       p.appendChild(document.createTextNode('That is not correct, please try again.'));
       p.setAttribute('class', 'wrong');
       wrapper.appendChild(p); 
   }
});