The nurse is evaluating discharge teaching of an adolescent who had a long leg plaster cast applied in the emergency department. Which statement by the adolescent indicates an understanding of cast care?

"I will not be able to take a shower until the cast is removed from my leg."

"If my toes are tingling I will elevate my leg above my heart, on several pillows."

"I should wrap a cloth around a stick before using it to scratch under my cast."

"I will put adhesive tape around the edges of the cast if they become sharp."