The correct answer to the question is:
a. The G.I. Forum
Explanation:
1. Hector Garcia formed The G.I. Forum in response to ethnic discrimination against Mexican Americans.
2. The G.I. Forum was established to address the issues faced by Mexican American veterans who were experiencing discrimination.
3. This organization played a significant role in advocating for the civil rights of Mexican Americans, particularly focusing on improving education, healthcare, and job opportunities for this community.
