PLS HELP I DAY DREAM TO MUCH TO KNOW THIS

upper 6N represent normal force due to contact of object with surface

and lower 6N represent gravitational force

3N is the tension force and 20 N is the pulling force and object will move along 20N force so acceleration is also along this side

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.