When a number of researchers use the same operational definition to measure a variable and achieve the same results the measure is said to be_______________?

A. environmental protection and economic growth are incompatible aims
B. environmental protection cannot be achieved without high tech solutions
C. an ecological form of economic growth is possible
D. consumer demand and market mechanisms can bring about ecologically benign outcomes

A. risks which result from human interaction with the natural world
B. risks associated with the activities of manufacturing industries
C. risks that have been exaggerated by the output of the media
D. risks that only affect advanced industrial economies