Final answer:
The selectively permeable membrane regulates molecular traffic due to the characteristics of materials, membrane solubility, and specific transport proteins.
Step-by-step explanation:
The selectively permeable membrane regulates the type and rate of molecular traffic into and out of the cell and organelles due to various factors. These factors include the characteristics of the materials being transported, the characteristics of membrane solubility, and the presence of specific transmembrane transport proteins. Therefore, the correct answer is E) All of the above.
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