JSFiddle - React, Tailwind, and code Playground

HTML

<select name="boxes">

	<option selected="selected" value="box1">BOX 1</option>
	<option value="box2">BOX 2</option>
	<option value="box3">BOX 3</option>
	<option value="box4">BOX 4</option>
	<option value="box5">BOX 5</option>
	<option value="box6">BOX 6</option>

</select>

JavaScript

//$('select[name*="boxes"]).hide();

$('select[name*="boxes"] > option[value="box6"]').hide();