Which words support the idea that the excerpt is an opinion? most, largely, no significant ignored, tolerated, existed hossacks, neighbors, abuse tight-lipped, ignored, issued?

The correct option is this: MOST, LARGELY, NO SIGNIFICANT. 
The excerpt attached to this question discussed the issue of domestic violence around 1900. The words 'most, largely and no significant' were used in the passage to signify that the opinions stated in the passage are the author's own opinions. The words give rough estimates and did not give specific numbers because those claims have not been formally verified.