The mother of a school-aged boy tells the practical nurse (PN) that he fell out of a tree and hurt his arm and shoulder. Which assessment should the practical nurse (PN) note as the most significant indicator of possible child abuse?

The abrasions on the child's arms, legs, and chest have healed.

The mother describes in detail what she did for her injured child.

The child looks at the floor when answering the nurse's questions.

The injury description by the mother varies from the child's version.