What BEST Explains Why Texas Turned from a Democratic Stronghold

Multiple Choice

What BEST explains why Texas turned from a Democratic stronghold in the 1930s to a Republican stronghold in the 2000s?

A) Texans on average became more conservative over time.
B) The Democratic Party paid little attention to recruiting strong candidates for political office.
C) The Democratic Party became more liberal over time.
D) The national Democratic Party just assumed it would always control Texas.