When you encounter a traffic signal flashing red, treating it as a stop sign and proceeding when it is safe is the appropriate action. A flashing red signal indicates that you must come to a complete stop at the intersection, just as you would at a stop sign. After coming to a full stop, you should yield to any traffic or pedestrians that are already in the intersection or near it and then proceed only when it is safe to do so.
This action helps ensure that you are mindful of other road users and enhances safety at intersections, which can often be high-risk areas for accidents. It is important to maintain awareness of your surroundings after stopping to make sure you can safely navigate through or across the intersection.
Other choices, such as continuing to drive or simply slowing down without stopping, do not adhere to the traffic rules that are designed to ensure safety at intersections. Turning around would not be a practical action at a traffic signal and would likely create confusion and potential hazards for other road users.