Explanation:

Fourth option is correct.

The Chief Minister of Delhi, launched the ‘Happiness Curriculum’ for students of nursery to Class 8 in government schools on July 2, 2018. The curriculum was launched in the presence of the Dalai Lama. Students across schools can expect a ‘happiness’ period of 45 minutes. Each class will begin with a five-minute meditation session. The Happiness period was designed and prepared by a team of 40 Delhi government teachers, educators and volunteers over a period of six months. It will also include value education and mental exercises.