Respuesta :
Answer:
A. two pulleys.
Explanation:
While using only one pulley requires you to use only half the force it would take to lift a load by hand, a fixed pulley combined in a system with a movable pulley, essentially doubles the force applied to lift or move the object.
Answer: A (two pulleys) first one
Explanation: I hope this helps you with your stuff.
Explanation: I hope this helps you with your stuff.