Respuesta :
"Free weights offer more versatility" is the one among the following choices given in the question that is the main difference between free weights and a universal machine. The correct option among all the options that are given in the question is the second option or option "B". I hope it helps you.
The main difference between free weights and a universal machine is that free weights offer more versatility. They allow three-dimensional movement, which helps build functional fitness and prevent everyday injuries. Machines on the other hand are good for focusing and developing specific muscles. Correct answer: B