National Education Policy (NEP) 2020 recommends the study of classical languages:

Correct option is C

as an additional option at the secondary stage
The National Education Policy (NEP) 2020 recommends the study of classical languages as an additional option at the secondary stage. This approach acknowledges the cultural and historical significance of classical languages and offers students the opportunity to explore these as part of their broader educational experience. By making it an option at the secondary stage, it allows for students who have developed basic literacy skills and have a better capacity to appreciate and understand the complexity and richness of classical languages.