Complex sentence: The 5 Whys is a questions-asking method used to explore the cause/effect relationships underlying a particular problem, with the goal of determining a root cause of a or problem.
Split into simpler sentences: The 5 Whys is a questions-asking method used to explore the cause/effect relationships underlying a particular problem. Ultimately, the goal of applying the 5 Whys method is to determine a root cause of a or problem.