DivMan,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
</head>
<body>
<div class="options">
<input type="hidden" value="18" class="questionId" name="questionId">
<input type="radio" name="r-1" id="radio-1" value="1" title=""/>
<label for="radio-1" class="false-answer">Да</label>
<input type="radio" name="r-1" id="radio-2" value="2" title=""/>
<label for="radio-2" class="true-answer">Нет</label>
</div>
<div class="options">
<input type="hidden" value="17" class="questionId" name="questionId">
<input type="radio" name="r-2" id="radio-3" value="1" title=""/>
<label for="radio-3" class="false-answer">Да</label>
<input type="radio" name="r-2" id="radio-4" value="2" title=""/>
<label for="radio-4" class="true-answer">Нет</label>
<input type="radio" name="r-2" id="radio-5" value="3" title=""/>
<label for="radio-5" class="false-answer">Движение разрешено только по обочине.</label>
</div>
<div class="options">
<input type="hidden" value="16" class="questionId" name="questionId">
<input type="radio" name="r-3" id="radio-6" value="1" title=""/>
<label for="radio-6" class="false-answer">Да</label>
<input type="radio" name="r-3" id="radio-7" value="2" title=""/>
<label for="radio-7" class="true-answer">Нет</label>
</div>
<script>
var ans = document.querySelectorAll('.options');
ans.forEach(function (element, i) {
var idQuestion = element.querySelector(".questionId").value;
element.addEventListener('change', function (e) {
var answer = e.target.value;
console.log(idQuestion, answer)
})
})
</script>
</body>
</html>