Read the first two stanzas of this poem:

I saw my soul at rest upon a dayAs a bird sleeping in the nest of night, Among soft leaves that give the starlight wayTo touch its wings but not its eyes with light; So that it knew as one in visions may, And knew not as men waking, of delight. This was the measure of my soul's delight; It had no power of joy to fly by day, Nor part in the large lordship of the light; But in a secret moon-beholden wayHad all its will of dreams and pleasant night, And all the love and life that sleepers may.

This excerpt is an example of what type of poem? A.Ballad B.Sonnet C.Sestina D.Haiku

A Sestina is a very complex verse form, usually unrhymed, consisting of six stanzas of six lines each and a three-line envoy. The end words of the first stanza are repeated in a different order as end words in each of the subsequent five stanzas; the closing envoy contains all six words, two per line, placed in the middle and at the end of the three lines.

But you do not really make the quite hard analysis of the poem because the poem itself is named “Sestina” and it was written by Algernon Charles Swinburne

So, to give a final answer to this question, this excerpt is an example of:

C.Sestina