Which of the following is a method to support a child's transition into cooperative play?

Guiding children to take turns in structured activities is an effective method to support a child's transition into cooperative play. This strategy helps children understand the concept of sharing and collaboration, which are essential components of cooperative play. By participating in structured activities that require taking turns, children learn to communicate, negotiate, and practice social skills with their peers. This approach not only gives them the opportunity to interact with one another in a supportive environment but also helps to build their confidence in engaging cooperatively.

In contrast, options like dictating rules would not foster a sense of agency or engagement in children, parallel play does not necessitate interaction, and limited opportunities for interaction can hinder social development rather than promote it. Thus, guiding children in turn-taking within structured activities provides a practical and constructive way to encourage cooperative play.