Which of the following events was a result of Ida Tarbell's book The history of the standard oil company?

A. Many people invested in large utility companies

B. The government honored the company with an award

C. The public demanded an end to monopolies

D. Many other large businesses started trust

Among the options given on the question the answer is option C.

The public demanded an end to monopoly.

Explanation: The book, 'The History of the standard oil company' by Ida Tarbell was milestone book in the history of industrial journalism book. Ida Tarbell played a vital role in the early days of investigative journalism and advocated to end the monopoly in the business.

The book was published on 1904 on the Standard Oil Company. After publication of the book the people came to know about the monopoly of the business and the affect of this on the economy. They realized the negative side of monopoly. As a result the public demanded an end to monopoly.

Therefore, the answer of the question is option C.