Concept:The Three Language Formula recommends teaching the second language through maximum use of the target language.
Explanation:The Three Language Formula was devised in 1961 and recommended by the Kothari Commission and the 1968 policy.
First language is mother tongue or regional language.
Second language in Hindi‑speaking states is another modern Indian language or English; in non‑Hindi states it is Hindi or English.
Second language learning is a conscious, deliberate process for gathering information.
It should be taught bilingually in primary classes, but in higher classes students must become fluent.
Therefore, the most effective method is to use the target language as much as possible.
Answer:B. using the target language as much as it is possible