CTET Class I to V 3 Jan 2022 Paper

According to National Curriculum Framework, NCF(2005), which of the following represents a vision of a 'classroom environment for doing mathematics'?
(a) Students working in groups and looking for different strategies to solve a problem while making connections with real-life situations
(b) Students solving textbook exercises based on examples solved by the teacher
(c)Teacher reflecting on the process of learning and seeing mistakes as opportunities for learning.
(d) Students copy the solution to questions from the backboard.
Choose the correct option.