Which sentence correctly uses an apostrophe? A The teachers' lounge is on the second floor. B The teacher's lounge is on the second floor (multiple teachers). C The teachers lounge is on the second floor. D The teacher's' lounge is on the second floor. ✓ Correct Answer: Option A For plural possessives of regular nouns, the apostrophe goes after the s: teachers'. Practice ACT Exam Prep Quizzes → Browse All Questions Study Flashcards