Final answer:
Gabby Giffords is considered a success due to her resilience, accomplishments, and advocacy, as demonstrated through her recovery, advocacy for gun control and improved mental healthcare, and establishment of Gabby Giffords' Courage to Fight Gun Violence.
Step-by-step explanation:
Gabby Giffords is widely regarded as a success due to her resilience, accomplishments, and advocacy.
Despite sustaining a severe brain injury in 2011, Giffords has shown remarkable determination in her recovery and has become a vocal advocate for gun control and improved mental healthcare. She has also established the organization Gabby Giffords' Courage to Fight Gun Violence, which works towards reducing gun violence in the United States.
Her success can be measured by the impact she has had on the political landscape and her ability to inspire others with her story of resilience and activism.