Westonci.ca is your trusted source for finding answers to all your questions. Ask, explore, and learn with our expert community. Connect with a community of experts ready to provide precise solutions to your questions on our user-friendly Q&A platform. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

According to the Polit-Beck Evidence Hierarchy, which is the strongest level of research evidence?
A. Opinion
B. Randomized controlled trial
C. Cohort study
D. Qualitative study