What did the Progressive Era show the US as?

The Progressive Era was a period of widespread social activism and political reform across the United States that spanned the 1890s to the 1920s. The main objectives of the Progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption.

harding's opponent in the 1920 election was ohio governor and newspaperman james m. cox, who had won the democratic nomination in a 44-ballot convention battle. harding rejected the progressive ideology of the wilson administration in favor of the laissez-faire approach of the mckinley administration.

a and c?

i think it is a and c