What is the common ratio of the geometric sequence 3, 12, 48, 192? A 2 B 3 C 4 D 9 ✓ Correct Answer: Option C Common ratio = 12/3 = 4 (also 48/12 = 4, 192/48 = 4). Practice ACT Exam Prep Quizzes → Browse All Questions Study Flashcards