Which of the following are powers that are exercised by both the national government and state governments at the same time?
a)concurrent powers
b)enumerated powers
c)prohibited powers
d)reserved powers

Concurrent powers.

Explanation: concurrent power is a political power independently exercisable by both federal and state governments in the same field of legislation. The United States constitution delegated Power to the federal government that is also held by the states. Concurrent power is a power shared by both the federal and state government. In the United State for instance, examples of the concurrent power shared by both the national and state government include the power to tax, create lower court and construction of roads. Concurrent powers are exercised simultaneously within the same territory, the same body of citizens and regarding the same subject matter.

affirmative action refers to the policies that take gender, race, or ethnicity into account in order to promote equal opportunity.

employers subject to title vii are prohibited from taking race or sex into account in any employment decisions. aa is a penalty for having any job group substantially statistically "underutilized" in any race or either sex. the employer must take steps to eliminate the underutilization, then stop, ending its aa efforts

i believe the correct answer is b.