The correct answer is A. A loosely defined political movement of individuals and groups who hoped to bring about social and political change in American life.
Step-by-step explanation:
The terms "Progressive" and "Progressivism" began to be used at the beginning of the 20th century to describe a political movement that included different groups supporting important social and political changes. This includes the protection of civil rights, equality for minorities such as African Americans, immigrants, and women, the implementation of better labor conditions, among others. Additionally, this political movement was not strictly defined due to the number of groups that supported reforms and change but led to important advances and changes in American life.