JSFiddle - React, Tailwind, and code Playground

HTML

<select class="selector">
    <option>Option A</option>
    <option>Option B</option>
    <option>Option C</option>
    <option>Option D</option>
</select>
<select class="selector">
    <option>Option A</option>
    <option>Option B</option>
    <option>Option C</option>
</select>
<select class="selector">
    <option>Option A</option>
    <option>Option B</option>
    <option>Option C</option>
    <option>Option D</option>
    <option>Option E</option>
</select>

JavaScript

$(".selector").each(function () {
    var options = $(this).children('option');
    var random = Math.floor(options.length * (Math.random() % 1));
    options.attr('selected', false).eq(random).attr('selected', true);
});