The correct answer is:d. Pull down on the handle, letting gravity work for you.When tightening chains with a ratchet binder, it's essential to:1. Ensure proper positioning and safety.2. Pull down on the handle, using gravity to your advantage.3. Apply even pressure to avoid damaging the chain or binder.This technique helps:1. Maximize leverage and efficiency.2. Reduce strain on your body.3. Prevent accidents and injuries.Avoid:1. Pushing up on the handle, which can lead to strain and loss of control.2. Leaving excessive slack, as it can compromise load security.3. Relying on others to do the work, ensuring personal responsibility.Remember to always follow safety guidelines and manufacturer instructions when working with chains and binders.