How is the membership of the House of Representatives determined? A. by the apportioned population of the states
B. by two representatives from each state
C. by appointment of the governor of the state according to a formula established by Congress
D. by the state legislature of each class

The Constitution provides for proportional representation in the U.S. House of Representatives and the seats in the House are apportioned based on state population according to the constitutionally mandated Census.

Explanation:

When Governor Faubus ordered the Arkansas National Guard to surround Central High School to keep the nine students from entering the school, President Eisenhower ordered the 101st Airborne Division into Little Rock to insure the safety of the "Little Rock Nine" and that the rulings of the Supreme Court were upheld.