Upto which grade, the teaching in mother tongue is most preferably be adopted according to New Education Policy 2020, if possible?

Correct option is B

Introduction
The National Education Policy (NEP) 2020 strongly emphasizes promoting multilingualism and the power of language in learning. It mandates that the medium of instruction must be the mother tongue/local language/regional language up to at least Grade 5, and preferably extended up to Grade 8 and beyond, wherever possible. This is intended to boost conceptual understanding and foundational literacy.
Information Booster
· Policy Focus: The NEP 2020 advocates for mother tongue/local language as the medium of instruction.
· Mandatory Grade: The instruction is mandated to be in the mother tongue up to at least Grade 5 (age 11).
· Extension: The policy encourages schools to continue this medium of instruction until Grade 8 and beyond, wherever feasible.
· Pedagogical Rationale: Learning in the mother tongue significantly improves a child's thinking, conceptual clarity, and foundational literacy and numeracy.
· Multilingualism: The policy also stresses the importance of the three-language formula, with Sanskrit and foreign languages being offered at various stages.
Additional Points
· The options Grade 4, Grade 2, and Grade 3 are incorrect grades; Grade 5 is the minimum grade mandated for mother tongue instruction.