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<html><body><form> Select your favorite fruit: <select> <option id="apple">Apple</option> <option id="orange">Orange</option> <option id="pineapple" selected>Pineapple</option> // Pre-selected <option id="banana">Banana</option> </select></form><p>Click the button to change the selected option in the dropdown list to "orange" instead of "pinapple".</p><button onclick="myFunction()">Try it</button><script>function myFunction() { document.getElementById("orange").selected = "true";}</script></body></html>