During a meeting for city planning and development, the chief engineer used an architectural model as supporting material to attract various segments of people to attend and put forth important points

____________________ is the idea that cultures vary in how they think, act, and behave, as well as in what they believe and value

Fill in the blank(s) with correct word

An effective research strategy should produce information from __________.

A. many sources that provide a single type of supporting material B. a single source that provides many types of supporting material C. mostly personal experience and direct observation D. many sources that provide many types of supporting material