Which theme is depicted through juliet’s monologue?

Much of Juliet's soliloquy deals with the relationship between youth and old age. In it she discusses marriage, pregnancy, love, sex, and other aspects of a relationship that change over time.

Not b or c so that leaves you with a or d. a is the better choice.

Ifound this on google “what are motifs? a motif is a literary term that is an idea, object, or concept that repeats itself throughout a text. a motif gives clues to theme or reinforces ideas an author wants to emphasize.” i hope this for what your looking for