Which of the Following Is NOT True of a Systems-Thinking

Which of the following is NOT true of a systems-thinking approach?

A) Systems-thinking focuses on the interconnections between health problems.
B) Systems-thinking tries to identify leverage points where specific actions can have a substantial impact.
C) Systems-thinking examines the impacts of two or more simultaneous interventions.
D) Systems-thinking approaches attempt to reduce problems to one factor at a time.