Final answer:
Non-cooperation through non-violence is a powerful force that strengthens the nation by highlighting its weaknesses and suggesting solutions.
Step-by-step explanation:
The best paraphrase of the excerpt from Mahatma Gandhi's Freedom's Battle is: Non-cooperation through non-violence is a powerful force that strengthens the nation by highlighting its weaknesses and suggesting solutions. It encourages self-reliance, revolutionizes opinion, and stimulates thought. The excerpt emphasizes the purifying nature of non-cooperation and its ability to bring strength to the nation. It also highlights the movement's focus on self-reliance and its transformative impact on public opinion.