JSFiddle - React, Tailwind, and code Playground
by danheberden
HTML
<select id="ctl00_contentPagePanel_lstActivities">
<option value="oneVal" selected="selected">one</option>
<option value="twoVal">two</option>
</select>
JavaScript
console.log ( $('#ctl00_contentPagePanel_lstActivities option[selected="selected"]').text() );