The correct answer is "The government played a greater role in regulating the economy and society."
The Progressive era in American history saw several different Progressive presidents including Teddy Roosevelt, William Howard Taft, and Woodrow Wilson. All of these men used the government as a way to have greater control over the economy.
For example, Teddy Roosevelt filed several lawsuits against businesses/individuals who acted like trusts. Roosevelt felt that these trusts created a type of monopoly that limited competition among businesses in the US.
The answer to your question would be A. The government played a greater role in regulating the economy and society.