A certain lever system is only 30% efficient. What could make it more efficient? (1 point)

Use a stiffer lever to reduce energy lost bending the lever.
Have more than one person help to lift the lever.
Use it with a lighter load to make it easier.
Make a longer lever that will require less force.
Why is it d, wouldn't that be more force?

Yes, you are correct. A longer lever would actually require more force to lift the load, not less force. The correct answer should be a. Use a stiffer lever to reduce energy lost bending the lever. This would help to minimize energy loss and improve the efficiency of the lever system.