You are caring for a 4-month-old male patient who is reported to have vomited five times today. His parents describe no other associated symptoms or complaints. The patient is lying on the couch with a pacifier in his mouth, smiling at you. Developmentally, you would expect a patient of this age to be able to:
a.sit up without assistance.
b.drool without swallowing.
c.say the word "no."
d.have attachment anxiety or fear strangers.
Answer: b. drool without swallowing.