Which of the following observations by the nurse should suggest that a 15-month-old toddler has been abused? 1. The child appears happy when personnel work with him. 2. The child plays alongside...

Which of the following observations by the nurse should suggest that a 15-month-old toddler has been abused?

1. The child appears happy when personnel work with him.

2. The child plays alongside others contentedly.

3. The child is underdeveloped for his age.

4. The child sucks his thumb.