Natalie curtis made a number of observations about the Navajo and their songs

Natalie Curtis made a number of observations about the Navajo and their songs. According to these observations, songs like “Twelfth Song of Thunder” were

a) passed on to the Navajo by the Apache people.

b) never written down by the Navajo ancestors.

c) constantly changing pieces of literature.

d) given to the Navajo people by the gods.

Natalie Curtis observed that the Navajo people, believed that their songs, like the "Twelfth Song of Thunder", was given to them by God. Option D is the correct answer.

Natalie Curtis, who was a musician herself, spent years in observing the cultures and the beliefs of the American Indians.
She focused on the themes, ideas, origins and beliefs that were central to the Indian Tribe communities, while developing their songs.
She wrote "The Indians' Book: An Offering by the American Indians of Indian Lore, Musical and Narrative, to Form a Record of the Songs and Legends of Their Race", implementing her observation and research.
Some of her observations included:

The Navajo people performed their songs with their eyes closed, so that they could provide their focus to every word and detail of the song.
Their songs are very closely linked with nature.
They believed that their songs were given to them by God.

From these observations, it is clear that Option D is the correct answer.

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