Which of the following best describes characteristics of the European Union?

A.
a unified state with a strong central government
B.
an economic union of separate states with a common currency and freedom of movement
C.
a federal republic in which separate states elect representatives to a central government
D.
a parliamentary state in which people elect ministers to a lower house and states appoint representatives to an upper house

Please select the best answer from the choices provided.

B.

an economic union of separate states with a common currency and freedom of movement