Explanation: In "Sonnet 18 by William Shakespeare, the option that most closely shows the central themes is <u><em>love and immortality</em></u>. It is because of love that the author writes this sonnet. These lines will always praise her beauty. Although the passing time will affect others, death is not going to get her. She is immortal in the lines of the sonnet.
Love and immortality because Shakespeare is saying that the love he has for his partner will live on within this poem, so she, in turn, will be immortal.
