During William Howard Taft’s presidency, the notable reform among the given options was:
Standard Oil’s trust was dissolved by the Supreme Court.
Taft's administration was known for its vigorous enforcement of antitrust laws, and in 1911, the Supreme Court ruled that Standard Oil violated the Sherman Antitrust Act, leading to its dissolution.
The other statements do not accurately pertain to reforms made during Taft's presidency:
- The Nineteenth Amendment, granting women the right to vote, was passed in 1920, after Taft's presidency.
- The eight-hour workday for federal workers was established later, without a specific reform directly attributable to Taft's administration.
- The Meat Inspection Act and Pure Food and Drug Act were passed in 1906 during Theodore Roosevelt's presidency, not Taft's.