During the early 20th century, the successfully lobbied for reforms to education, including increased years of mandatory attendance

conservatives
bull moose party
liberals
progressives

The correct answer is C. Liberals

Explanation:

The Education Act was established by Liberals in 1907. This Act had some Regulations related to Secondary Schools. Some of them were that each student had to pay £5 per year and the Act also established that Schools had to accomplish some requirements to get this benefit.

Schools could not reject a student because of his/her religious beliefs and the Act gave some Local Authorities who were in charge of education, the power of getting new lands to construct Secondary Schools, this would be important to lead education outside the cities.  

Thus, free scholarships augmented because of the implementation of these regulations.  

c it has to be i googled it

where is the passage