During the preschool period of development (ages 3 to 6 years), children experience significant growth in various domains including cognitive, social, and emotional aspects. Developmental milestones are crucial for assessing their progress. One of the important milestones in this stage is the ability to engage in ___ play, which is characterized by imaginative and cooperative behaviors. Capable of building social skills and creativity, this type of play allows preschoolers to navigate social interactions. It is vital for nurses to recognize the impact of these behaviors on the child's overall development. Based on your understanding of developmental stages, fill in the blank with a term that describes this type of play.