Congress's Tendency in Recent Years to Give Executive Agencies Fewer

Congress's tendency in recent years to give executive agencies fewer clear guidelines for implementing laws is the result of

A) the greater scope and complexity of the tasks that American government has undertaken.
B) the reduced scope and complexity of the tasks that American government has undertaken.
C) frequent requests made by state governments to transfer more power to the executive branch.
D) numerous initiatives passed by voters that require less legislative specificity.
E) a series of Supreme Court decisions that ruled executive mandates were unconstitutional.