Answer :
A. Many people believed they were convicted solely because they were anarchists.
The correct answer is A) Many people believed they were convicted solely because they were anarchists.
The statement about the Sacco-Vanzetti trial of 1921 that is true is "Many people believed they were convicted solely because they were anarchists."
Bartolomeo Vanzetti and Nicola Sacco were two Italian anarchists that lived in Massachusetts, that were accused of having killed two men. They were sentenced to die on July 14, 1921. Many people supported the innocence of these two men because there was no clear evidence, but the perception of the American citizens in that time was of fear of anarchists.