The figurative language in the above lines convey the theme that being in love:
C. brings a person the greatest joy.
Explanation:
In Sonnet 29, Shakespeare writes about the great joy and happiness which falling in love has brought to him. He says that to him, love is the most important thing. He compares the love with the riches of the Kings and says that the riches is not as valuable and dear to him than his love.
