The fragrance of bread baking in a kitchen spreads to other rooms by select one: a. selective permeation. b. osmosis. c. diffusion. d. active transport.

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explanation:

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.