Congregational Singing of ‘Shabad’ is related to:

The correct answer is Option (1) - Guru Purab

Congregational singing of 'Shabad' is a practice associated with Guru Purab, which commemorates the birth anniversary or other significant events related to the Sikh Gurus. During Guru Purab celebrations, Sikhs gather together to sing hymns (Shabad) from the Guru Granth Sahib, the central religious scripture of Sikhism. This collective singing, known as "Kirtan," is an integral part of Sikh worship and serves to foster spiritual unity and devotion among the Sikh community.