In which sentence is the relative pronoun used within the object of a preposition?

The second sentence is the only one which has a relative pronoun within the object of a preposition: This is the flag designer of whom I have spoken.

Explanation: the relative pronoun in the sentence is "whom" and it is placed between the preposition (of) and the object of the preposition (I have spoken).

All of the other sentences have no relative pronouns placed between prepositions and their objects.

the answer is: round.

in literature, round characters are considerably complex and experience or are subjected to unpleasant situations. as a consequence, they go through crucial sentimental and psychological development, which can cause surprise in the readers. in this case, juan's dramatic transformation is related to the adversities he meets at school.

the audience knows that nora is intentionally failing to dance correctly, but helmer doesnt