The correct statements about the adoption of the past version of Georgia's state flag are:
A. The flag was adopted in response to the decision in Brown v. Board of Education.
C. Georgia adopted the flag to show the state's opposition to school integration.
D. Georgia adopted the flag to mark the anniversary of the Battle of Chickamauga.
Note: While E could imply some measure of opposition arose leading to a later change, it wasn't accurate to characterize the initial reaction as "widespread opposition" that led to immediate replacement. Thus, A, C, and D are the most relevant choices.