Correct option is D
Mother tongue of the children.
• The NEP 2020 emphasizes the importance of using the mother tongue or the local language as the medium of instruction in the early years of education.
• It recognizes that children learn best when they are taught in a language, they are familiar with and use in their daily lives.
• Using the mother tongue or local language helps children develop a strong foundation in their first language, which in turn enhances their learning abilities and cognitive development.
• Additionally, the policy also supports multilingualism and encourages the gradual introduction of other languages, including Hindi and English, as children progress in their education.