Which of the following aspects contributes to developing children's social skills while playing?

Cooperative play is a key aspect that contributes to developing children's social skills while playing. During cooperative play, children engage in activities together, whether building a structure, playing a game, or role-playing scenarios. This type of interaction requires them to communicate, collaborate, share ideas, and negotiate roles, which are essential components of effective social skills. As they work together toward a common goal, children learn to resolve conflicts, understand different perspectives, and develop empathy.

Contrastingly, solo play does not provide opportunities for social interaction, as children are focused on individual activities. Passive observation may allow children to watch others interact, but it does not actively engage them in social learning or practicing those skills themselves. While competitive play can foster certain skills such as sportsmanship, it may also lead to a focus on winning rather than collaboration, which doesn't promote social skill development as effectively as cooperative play does.