Final answer:
Keeping a ladder handy for reaching high places is not a direct strategy to prevent falls. Clear walkways, repaired cords, and handrails contribute to fall prevention.
Step-by-step explanation:
The strategy that is not effective in preventing falls is keeping a ladder handy for reaching high places. While keeping walkways clear, repairing electrical cords, and installing handrails are all proactive measures to prevent falls, having a ladder readily available does not directly prevent falls and could even potentially increase the risk if not used properly. It is important to emphasize safety and correct use of ladders when they are needed.