Question

what is one hallmark of the progressive era? use of the working class people to provide reforms progress in higher education use of scientific experts politicians enacting change rewatch

Explanation:

The Progressive Era (late 19th-early 20th century US) emphasized using evidence-based, expert-driven solutions to address societal issues like urbanization, corruption, and industrialization. Reliance on scientific experts to inform policy and reforms was a key characteristic. The other options are incorrect: reforms were often pushed for the working class, not by them as a hallmark; higher education progress was not a defining feature; and while politicians acted, the use of experts was a distinct, core hallmark.

Answer:

Use of scientific experts