An important political aim of the progressive movement was to
1. guarantee government jobs for the unemployed
2. stimulate democratic reforms such as the initiative and the referendum
3. create a unicameral national legislature
4. increase the participation of african americans in the federal government

2. stimulate democratic reforms such as the initiative and the referendum.

Explanation:

Progressive movement was started to take political reforms at the local level but soon elaborated on the state and national level. The period it covers consists mainly fro 1890's to 1920's. The movement was directed to curb political corruption and to enforce direct democracy. The movement was led by middle-class merchants, teachers, lawyers and other professionals to enforce scientific methods to the political machinery.

the correct answer is a