By the time a child is 3 years old, they are expected to:

Rationale: A. By age 3, children typically begin to distinguish between reality and make-believe, showing emerging imaginative play and understanding of fantasy versus real events. B. Cooperation with other children develops gradually and is more consistently observed around ages 4–5. C. Taking turns when playing structured games generally emerges closer to 4–5 years of age as social and cognitive skills mature. D. Preferring to play with others rather than alone is more characteristic of children around 4 years old; 3-year-olds often engage in parallel play, playing alongside rather than directly with peers.