Final answer:
The statement best supporting the theme of preserving memory and fighting forgetting is, "That I have tried to keep memory alive, that I have tried to fight those who would forget."
Step-by-step explanation:
The statement from the "Acceptance Speech for the Nobel Peace Prize" that best supports the speaker's emphasis on memory and commitment to fighting against forgetting past atrocities is option b: "That I have tried to keep memory alive, that I have tried to fight those who would forget." This selection directly addresses the speaker's dedication to remembering the past and ensuring that the sacrifices and experiences of those affected by tragedies are not forgotten, which aligns with the overarching themes found in the other excerpts provided.