Which of the follow stopped president william mckinley from trust-busting in his second term in office

The options of the question are, A) He resigned from office after the scandal. B) He lost his reelection campaign. C) He got sick after giving his inagural address. D) He was shot by an anarchyst.  

The correct answer is, D) he was shot by an anarchyst.

What stopped Presiden William Mackinley from trust-busting in his second term office was that he he was shot by an anarchyst.  

William Mackinley was the 25th President of the United States. He maintained the gold standard in the economy of the U.S. and won the Spanish-American War, anexating new territories to the United States such as Philippines, Puerto Rico, and Guam. President McKinley was in a public event in Buffalo, New York, when he was shot by an anarchyst individual called Leon Czolgosz.

i really do want to but i just don't know it i'm so sorry : (