William Howard Taft is best known for his support of higher tariffs, which he believed would help improve trade. Therefore, the statement "Taft advocated for higher tariffs to improve trade" is true.
The other statements are not accurate in the context of his presidency:
- While Taft did support some aspects of women's suffrage, he did not actively promote it as part of his platform.
- Taft was not generally considered more popular than Theodore Roosevelt. In fact, Roosevelt's popularity overshadowed Taft's presidency.
- While Taft did pursue antitrust actions, he did not break twice as many trusts as Roosevelt; he is known for being more aggressive in those efforts, but not to that extent.
Thus, the most accurate statement regarding Taft among the options provided is that he "advocated for higher tariffs to improve trade."