Answer:
D. The central government in a confederacy is best described as a "government over governments" instead of a "government over individuals" (or a "government over people")
B. In confederacies, it is difficult (if not impossible) for the central government to prevent states from free-riding on the provision of public goods.
Step-by-step explanation:
Confederations are agglomeration of states or units which work together to achieve a common objective by sacrificing some of their freedom and right. UNO is a confederation . US is a federation.