Which of the following tools or techniques is used for Estimate Activity Duration? 10/29/2018 – by Mod_GuideK 0 Which of the following tools or techniques is used for Estimate Activity Duration? A. Critical path B. Rolling Wave C. PDM D. Para metric SHOW ANSWERSCorrect Answer: D Explanation/Reference: How To Pass PMP Exam? PMI PMP PDF dumps. High quality PMP pdf and software. VALID exam to help you pass. Download Printable PDF. VALID exam to help you PASS.