A three-year-old with language delay is increasing mean length of utterances. The teacher joins the child during block play to promote language growth. Which scenario would most increase the child's number of words when playing together?

• A. When the child picks up a car and says 'C' for 'car,' the teacher responds, 'Vroom, vroom.'
• B. When the child picks up a car and says 'C' for 'car,' the teacher responds, 'Car.'
• C. When the teacher hands the child a car and the child says 'C' for 'car,' the teacher responds, 'Red car.'
• D. When the teacher hands the child a car and says 'Car,' the child responds, 'Car.'

Answer: (C)