The following reserve components have both a federal mission and a state mission, and therefore can be used to enforce state laws.
a) army reserve & ng
b) air reserve & ng
c) navy reserve & marine reserve
d) air ng & army ng

Answer is Air NG and Army NG.

Explanation:

Air national guard and army national guard are military reserve comprised of civilians which can include military, aviation and medical people, who are trained part time and did not go for duty until they are called upon.

They help the military and at the same time help the communities because they are close to home.

the best answer is b.

hope this : )