In the situation that has been put into an illustration above, it can be stated that the professor's emphasis best illustrates a biopsychosocial approach. Therefore, the option D holds true.
A biopsychosocial approach can be referred to or considered as an approach wherein a person conducting a study using the applications of an exasperated approach has access to various levels of analysis can a study using these applications of this approach, which is the primary intention of the things to be done. It cannot be performed effectively without carrying a multiple level of analysis.
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