Button input type no longer works

On one of my sites (pmtestcenter), I share a daily test question where the answer is revealed by clicking a button. Since the update to 3.5, this no longer works. Here’s sample code that I was using:

<input type=”button” value=”Click to see answer” onClick=’alert(“B. Planned, inspected — The philosophy of prevention over inspection is that quality must be planned in, not inspected in.”)’>

Can someone share an alternative?