Which of the following is when Congress limits the number of regulations that an agency is allowed to enforce?

Deregulation refers to the process by which Congress reduces or eliminates restrictions and regulations that agencies are allowed to enforce. This can involve the removal or alteration of existing regulations that govern how industries and businesses operate, ultimately leading to a more free-market environment. By limiting the number of regulations, Congress aims to decrease the power of agencies and promote economic growth or efficiency in specific sectors.

In contrast, regulation generally involves the establishment of rules and guidelines that agencies are empowered to enforce. Termination would imply completely ending an agency or its operations, which is different from merely limiting its regulatory scope. Nomination pertains to the process of selecting individuals for government positions, particularly in the context of appointing officials, and does not relate to the regulation enforcement directly. Thus, deregulation accurately captures the concept of Congress imposing limits on the regulations that agencies can enforce.