The professor mentioned several literary devices (such as metaphor, simile, and personification) during her lecture.
Correct: E
Parentheses are used to enclose supplementary or explanatory material that is not essential to the main meaning of the sentence. The original sentence correctly uses parentheses to set off the list of literary devices. No additional commas or other punctuation marks are needed directly before or after the parentheses unless they are required by the surrounding sentence structure independently of the parenthetical material. Option E is correct because the punctuation is already properly used.