Problem: A 9-month-old boy presents for a well-child check. His parents report that he can pull up to stand and can cruise around the house with support. He said his first word, mama, 2 weeks ago, and since then has started saying mama 4 to 5 times a day. He can hold his sippy cup and drink milk independently. He smiles socially but does not play pat-a-cake. He knows how to wave goodbye. He enjoys looking around and fancies bright lights around him. What is the most appropriate next step in management? Looking for Assignment Help? A. Reassurance and routine follow-up B. Perform screening for autism C. Perform audiological examination D. Check gross motor muscle function