What theme, commonly used by shakespeare, does "sonnet lv" illustrate?
a poet can save his love by immortalizing her in his poetry.
a poet can immortalize love and beauty in his poetry.
a poet can profess his love forever through a poem.

Option A. The theme, commonly used by Shakespeare, that Sonnet LV illustrate is that a poet can save his love immortalizing her in his poetry.

Explanation:

In Sonnet LV William Shakespeare revisits one of his commonly used themes, the one of immortalizing himself or others through his work. In the case of Sonnet LV Shakespeare writes about the endurance of love, and how through his poem and his words he can immortalize and save his loved one. The meaning of this theme is that poetry is immortal and will certainly outlive the characters it refers to.