A hospitalized toddler was drinking from a cup at home but now refuses to drink from anything except his favorite bottle. What is the most likely reason for this behavior?

He is dealing with the anxiety of hospitalization by regressing.

He is attempting to refocus the attention of the adults around him to avoid further painful procedures.

He is exhibiting normal behavior for his age, as children often stop new behaviors after they believe they have mastered them.

He is demonstrating attention-seeking behaviors because of an overabundance of attention in the hospital.