Both of these are written by 18th century Romantic poet, Percy Bysshe Shelley. A Defence of Poetry is an essay reflecting the existence of poetry and its reasoning, while Mutability emphasizes the essence of change, transformation and its cycle. The last stanza of the poem is the following:
It is the same!–For, be it joy or sorrow,
The path of its departure still is free:
Man’s yesterday may ne’er be like his morrow;
Nought may endure but Mutability.
It concludes previously mentioned feelings and emotions coming to one end which is departure. The excerpt from the essay also deals with the issue of departure. Therefore, the correct answer is the last option.
It is the same!–For, be it joy or sorrow,
The path of its departure still is free: