Around 1880, a level of schooling past basic education, known as secondary school, was developed. secondary school was primarily installed as a way to:

Secondary schooling was primary installed as a way for students to be exposed to deeper understanding on the lessons that have been taken during their primary education. It was also designed so that students will be able to determine for themselves which skills they are good at and which skills they can improve.

Ibelieve the answer is c.