Based on your test results, the cocaine was cut with which substance?
a) sugar
b) ascorbyl palmitate
c) powederd milk
d) corn starch

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the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.