When trying to improve a process, one reason to use pdsa cycles rather than a more traditional version of the scientific method (such as a randomized, controlled trial) is that:

a) pdsa cycles are easier to run with a large team of people.
b) the results of pdsa cycles are more generalizable than other methods.
c) pdsa cycles are simpler to use than other methods.
d) pdsa cycles provide a mechanism to adjust improvement ideas as the project progresses.
e) both c and d