Three-point estimation uses: A Only the most likely estimate B Optimistic, most likely, and pessimistic estimates to calculate an expected value C Only the pessimistic estimate D Only the optimistic estimate ✓ Correct Answer: Option B PERT: Expected = (Optimistic + 4×Most Likely + Pessimistic) / 6. Accounts for uncertainty. Practice PMP Exam Prep Quizzes → Browse All Questions Study Flashcards