HELPPP 30 POINTS Which statement is a good description of a model?
A) A model is a description of nature based only on several observations.
B) A model is a description of nature that is more reliable than the real system.
C) A model is a complex computer simulation that can only be created and used by a genius.
D) A model is a testable idea, created by the human mind to tell a story about what happens in nature.