JSFiddle - React, Tailwind, and code Playground

HTML

<img id="dynImg" src="http://sulzbachercenter.org/sites/default/files/cards/prev_Birthday.jpg" />
<select id="dynSelect" name="os0">
	<option value="Birthday">Birthday Cupcake</option>
	<option value="Christmas">Christmas</option>
	<option value="Easter">Easter</option>
	<option value="FathersDay">Father's Day</option>
	<option value="Flowers">Flowers</option>
	<option value="Hanukkah">Hanukkah</option>
	<option value="MothersDay">Mother&#39;s Day</option>
	<option value="Rainbow">Rainbow</option>
	<option value="StPatricksDay">St. Patrick's Day</option>
	<option value="ThankYou">Thank You</option>
	<option value="Thanksgiving">Thanksgiving</option>
	<option value="ValentinesDay">Valentine's Day</option>
</select>

JavaScript

var pictureList = {
	Birthday:"http://sulzbachercenter.org/sites/default/files/cards/prev_Birthday.jpg",
	Christmas:"http://sulzbachercenter.org/sites/default/files/cards/prev_Christmas.jpg",
	Easter:"http://sulzbachercenter.org/sites/default/files/cards/prev_Easter.jpg",
	FathersDay:"http://sulzbachercenter.org/sites/default/files/cards/prev_FathersDay.jpg",
	Flowers:"http://sulzbachercenter.org/sites/default/files/cards/prev_Flowers.jpg",
	Hanukkah:"http://sulzbachercenter.org/sites/default/files/cards/prev_Hanukkah.jpg",
	MothersDay:"http://sulzbachercenter.org/sites/default/files/cards/prev_MothersDay.jpg",
	Rainbow:"http://sulzbachercenter.org/sites/default/files/cards/prev_Rainbow.jpg",
	StPatricksDay:"http://sulzbachercenter.org/sites/default/files/cards/prev_StPatricksDay.jpg",
	ThankYou:"http://sulzbachercenter.org/sites/default/files/cards/prev_ThankYou.jpg",
	Thanksgiving:"http://sulzbachercenter.org/sites/default/files/cards/prev_Thanksgiving.jpg",
	ValentinesDay:"http://sulzbachercenter.org/sites/default/files/cards/prev_ValentinesDay.jpg",
};

$('#dynSelect').change(function () {
    var val = $('#dynSelect').val();
	$('#dynImg').attr("src",pictureList[val]);
});