Final answer:
Constructive Play refers to the self-regulated creation or construction of a product or a problem solution, highlighting the cognitive and social development in children.
Step-by-step explanation:
Constructive Play is best represented by statement C: "The self-regulated creation or construction of a product or a problem solution." In contrast to mere physical or social engagement, Constructive Play involves cognitive and social aspects as children interact with their environment and others to create something tangible or solve a problem. This form of play is highlighted by its emphasis on the use of imagination and critical thinking, aiding in the cognitive development of the child. It aligns with constructivism, a view that considers knowledge to be constructed through an individual's experiences and interactions with others.