The statement that is true of William Howard Taft is:
Taft broke twice as many trusts as Roosevelt.
Taft's administration did indeed prosecute more antitrust cases than Theodore Roosevelt's. As for the other options, while he did support women's suffrage, his support was less enthusiastic compared to his predecessor. Furthermore, Taft was generally less popular than Roosevelt during and after his presidency. Taft also endorsed higher tariffs at certain times, which was a point of contention in his administration, especially with progressives. However, the specific statement regarding breaking trusts stands out as a clear factual representation of his actions in office.