A nurse is assisting a school nurse with scoliosis screenings for a group of 12-year-old children. Which of the following actions should the nurse take?

Tell the children to alternate standing on one foot and observe their balance.

Ask the children to bend forward at the waist and observe them from behind.

Tell the children to stand up straight and observe them facing forward.

Ask the children to raise their hands over their head and turn from side to side.