Final answer:
Ecological Systems Theory would help understand the role of social service agencies pooling resources for affordable childcare.
Step-by-step explanation:
The theory that would help you understand the role of several social service agencies pooling their resources to solve a need for affordable childcare in your community is Ecological Systems Theory. This theory, developed by Urie Bronfenbrenner, emphasizes the interaction between individuals and their environments. It recognizes that individuals are influenced by multiple systems, including the microsystem (such as family and school), mesosystem (interactions between different microsystems), exosystem (external systems like social service agencies), and macrosystem (cultural values and norms).