The majority of states that did not ratify the equal rights amendment were located in the
a. southeast.
b. west.
c. northeast.
d. midwest.

The Correct Answer is A. Southeast.

The states are:

Southeast: Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina,  Tennessee and Virginia (9)

West: Nevada, Utah, Arizona (3)

Northeast: None

Midwest: Missouri and Illinois (2)

Additionally Oklahoma in the Southwest didn't ratify the Amendment.

Let's check the math: That's 15 states in total. 35 did ratify the Amendment. so we have in total 50 States.  Correct!

PS. Additionally Idaho, Kentucky, Nebraska, South Dakota and Tennessee originally ratified the Amendment, but later revoked it.