Final answer:
Cooperative federalism is criticized for creating a lack of clear jurisdiction and inefficiency, as it blends the responsibilities between state and federal governments, leading to potential overlap and duplicated efforts.
Step-by-step explanation:
A legitimate criticism of cooperative federalism is that it leads to a lack of clear jurisdiction and inefficiency (option b). This system blurs the lines between state and federal responsibilities, leading to overlap and the potential for duplicated efforts. It contrasts with dual federalism, where the state and federal governments operate within more clearly defined, separate spheres of influence. Cooperative federalism's blending of responsibilities, like those found in the marble cake federalism model, creates complexities in governance that can make it harder to identify which level of government should take action on certain issues. This can result in slower response times to problems and can hinder the effectiveness of government operations.