Final answer:
The highest level of structural organization in the human body is the organismal level, where all organ systems work together for the organism's survival.
Explanation:
Organismal level of structural organization is considered to be the highest and most complex level in the human body. This level represents the entire living human being as a whole, where all organ systems work together for the organism's survival and function.
The hierarchy of structural organization in the human body progresses from chemical building blocks to cells, tissues, organs, organ systems, and finally, the organismal level.
At the organismal level, all the different organ systems coordinate and collaborate to maintain life processes and functions of the human body.
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