In my opinion, the whole poem is quite ironic - although she is mentioning the exultation and the royal color of death, the poem itself begins with the narrator saying that she cannot breathe - that she doesn't want to die.
So, I would say that the ironic parts are:
Exultation is the going
Of an inland soul to sea, -
Past the houses, past the headlands,
<span>Into deep eternity!</span>
The words that best reflect Lincoln’s formal diction are the ones in the second option: brought forth.
To bring forth means to cause something to happen or be seen or known. The phrase is usually used in formal contexts or in literature.
All of the other options have words that are not considered formal and can be considered of every-day use.
Answer-
As a part of Kiowa among Navajo and Pueblo people who was also being guided by his parents toward success in the larger society beyond Jemez, Momaday inhabited a complex world of intersecting cultures. The need to accommodate himself to these circumstances prepared him for the perceptive treatment of encounters with various cultures that characterizes his literary work. Examples: Momaday's formal education took place at the Franciscan Mission School in Jemez; the Indian School in Santa Fe; high schools in Bernalillo, New Mexico; and the Augustus Military Academy in Fort Defiance, Virginia. In 1952 he entered the University of New Mexico at Albuquerque as a political science major with minors in English and speech. He spent 1956-1957 in the law program at the University of Virginia, where he met William Faulkner; the encounter helped to shape Momaday's early prose and is most clearly reflected in the evocation of Faulkner's story "The Bear" (1942) in Momaday's poem of that title (collected in Angle of Geese and Other Poems, 1974). Returning to the University of New Mexico, Momaday graduated in 1958 and took a teaching position on the Jicarilla Apache reservation at Dulce, New Mexico.