What are the characteristics of constructivist teaching in a social studies classroom? (A) The learners are actively involved in the classroom. (B) The activities are interactive and student-centered, and the environment is republican. (C) The teacher facilitates a process of learning in which students are encouraged to be responsible and autonomous.

In a classroom discussion on 'Water Conservation,' students express their ideas, share opinions, and ask questions. The teacher notes how language helps them reason, express emotions, and collaborate with peers, using the discussion to highlight that language is a tool for thinking and learning. This classroom interaction best demonstrates language as:

'The language of textbooks is often difficult for students to comprehend, which affects the readability of the text.' How can a teacher overcome this limitation of textbooks? (i) The teacher may provide students with a variety of supplementary information. (ii) Involve students in problem-solving activities.