Of the many different features of the scientific method, one feature is the most important. Without it, we should not call a field a "science." This feature is
A) the use of only those theories that are known, for certain, to be true.
B) that the results should lead to some useful technological application [for example, a useful medical treatment].
C) the use of quantitative measurements.
D) the use of mathematics.
E) the interaction between theory and observation.
E
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