Explanation:

- Sekrenyi festival (Option 1):

- Correct Answer: The Sekrenyi festival is celebrated by the Angami tribe of Nagaland in February. It is an important festival that marks purification and sanctification of the village and its people. The festival includes rites, feasting, and involves various rituals for cleansing and renewal.

- Losoong festival (Option 2):

- Losoong is celebrated by the Sikkimese people and the Lepcha and Bhutia tribes, marking the end of the harvest season. It is not related to the Angami tribe or celebrated in Nagaland.

- Hornbill festival (Option 3):

- Celebrated in December, the Hornbill Festival showcases the cultural heritage of various tribes in Nagaland, but it is not specific to the Angami tribe and does not occur in February.

- Majuli festival (Option 4):

- This festival takes place in Assam, primarily on Majuli Island, celebrating the culture and traditions of the Assamese people. It is not related to the Angami tribe or Nagaland.