If you were trying to move the couch across the room and your best friends is in the couch just change the amount of friction between the couch and the floor

This makes no sense

Where are the questions

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.