Which of These Is Not a Principle of "Green Architecture

Multiple Choice

Which of these is not a principle of "green architecture"?

A) architects look to continue to use building techniques and materials that have been in use since the Industrial Revolution in the West
B) self-sufficiency of buildings (lack of reliance on nonsustainable energy sources)
C) it seeks to use sustainable building materials and renewable resources
D) it is suitable to the climate and culture in which it is built