'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.

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:

'Language and literature-related tasks like writing essays, conducting debates and discussions, and writing prose and poetry pieces can be taught to students with the help of social science.' This statement shows the relationship of social science with which of the following disciplines?