Which progressive reform allowed the voters to approve or reject laws passed by the legislature?
a. referendum
b. primary
c. recall
d. initiative

The answer is Referendum.  Sometimes this is a vote that comes from the people themselves. This mostly leads to changes in laws. So many referendums have held in several countries from past to present shows how important it is that people take part in such developments.

Asuffragette was a member of militant women's organisations in the early 20th century who, under the banner "votes for women", fought for the right to vote in public elections, known as women's suffrage.