The best answer is C
i A Pareto diagram is a specific type of histogram, ordered by
frequency of occurrence – this is general information not specific to
the PMBOK.
ii It is used to show how many defects were generated by each
category of identified cause to allow remedial action to be focussed on
the most significant.
iii The Pareto principle (also known as the 80-20 rule) is different, see:
http://en.wikipedia.org/wiki/Pareto_principle
4 Integrated Change Control includes all of the following tools and
techniques except:
