From the given options, select the Figure of Speech (Poetic Device) used in the expression:

O solitude! where are the charms that sages have seen in thy face?

Apostrophe

The figure of speech used in the expression "O solitude! where are the charms that sages have seen in thy face?" is OPTION 2 - apostrophe.

Apostrophe is a figure of speech in which the speaker addresses an absent or inanimate object. In this case, the speaker is addressing solitude, which is an abstract concept. This creates a sense of urgency and emotion, as the speaker is asking solitude where its charms have gone.

The other answer choices are incorrect.

Simile is a comparison between two things using the words "like" or "as."

Alliteration is the repetition of consonant sounds at the beginning of words.

Oxymoron is a figure of speech in which two contradictory terms are used together. None of these devices are used in the expression "O solitude! where are the charms that sages have seen in thy face?".