30. Which powers exist when state and national governments share authority?
Answer: A
Concurrent powers exist when state and national governments share authority.
Concurrent powers are those authorities that are exercised simultaneously by both state and national governments, such as the power to tax, build roads, and create lower courts.
A) concurrent
This option is correct because concurrent powers are defined as those that both state and national governments have the ability to exercise, thus allowing for a shared authority in governance.
B) expressed
Expressed powers are those specifically granted to the national government by the Constitution. These powers do not involve shared authority with state governments, making this option incorrect.
C) implied
Implied powers refer to those that are not explicitly stated in the Constitution but are necessary to implement expressed powers. While they may allow for some flexibility in governance, they do not denote shared authority between state and national governments.
D) exclusive
Exclusive powers are those that are reserved solely for the national government or the states, meaning they cannot be shared. This makes exclusive powers the opposite of concurrent powers, thus making this option incorrect.
Conclusion
Concurrent powers are the only option that accurately represents the concept of shared authority between state and national governments. The other options either refer to powers that are not shared or are limited to one level of government, reinforcing that concurrent powers are essential for understanding this aspect of federalism.