JSFiddle - React, Tailwind, and code Playground

HTML

<select name="moa" id="moa" >
<option  value="B" selected="selected">B</option>
    <option  value="C" >c</option>
    <option  value="D" >d</option>
</select>

JavaScript

document.getElementById("moa").onchange = function() {
   // alert(this.value);
    var bien = this.options[this.selectedIndex].text;
    alert(bien);
    
}