The ‘Harihar Kshetra Mela’ held in Sonepur is a major gathering for devotees of:

Lord Vishnu
Lord Shiva
Lord Ganesha
Lord Kartikeya

The correct answer is: Lord Vishnu.

The Harihar Kshetra Mela is a major Hindu pilgrimage and cattle fair held in Sonepur, Bihar, India. It is held every year in the month of Kartik (October–November) on the banks of the Ganges River. The fair is dedicated to the Hindu god Vishnu and his consort Lakshmi.

The fair is a major gathering for devotees of Vishnu and Lakshmi. It is also a major cattle fair, where farmers from all over India come to buy and sell cattle. The fair is also a major cultural event, with performances of music, dance, and theater.

The Harihar Kshetra Mela is a major tourist attraction. It is estimated that over 10 million people visit the fair every year.

The other options are incorrect because:

  • Lord Shiva is not the main deity of the Harihar Kshetra Mela.
  • Lord Ganesha is not the main deity of the Harihar Kshetra Mela.
  • Lord Kartikeya is not the main deity of the Harihar Kshetra Mela.