There Are Four Practical Benefits from Using Systems Thinking and Drawing

There are four practical benefits from using systems thinking and drawing a system map,which of these should not be included.

A) Researchers may discover that relationships at first thought to be of secondary importance are of primary importance.
B) Drawing a system map and locating the disciplines on it that one believes are relevant enables the researcher to more easily identify other relevant disciplines that may have been overlooked earlier.
C) A system map can reveal the existence of a system that did not initially seem to be a system.
D) Drawing a system map helps the researcher understand how the system operates the way it does,not why the system behaves the way it does.