Children in their preschool years develop which of the following skills?

During the preschool years, children predominantly focus on developing language skills and engaging in cooperative play. This period is crucial for language acquisition, as children expand their vocabulary, learn to form sentences, and begin to understand the nuances of communication. Cooperative play, on the other hand, is an essential social skill that involves interacting with peers, sharing, taking turns, and working together towards common goals. These experiences help children build relationships and learn important social norms.

While developing basic literacy skills and numbers can occur during this stage, they are not the primary focus. Early reading and writing, mathematical thinking, and self-sufficient care skills may begin to emerge but are not as prominently developed as language and social cooperative skills during the preschool years. Therefore, the emphasis on enhancing language capabilities and fostering relationships through play makes the chosen answer particularly relevant to the developmental milestones typical for preschool-aged children.