Final answer:
The correct sequence of bodily organization is from cells to tissues, then to organs, and finally to organ systems (A).
Step-by-step explanation:
The correct sequence of bodily organization from the simplest to the most complex is A) Cells, tissues, organs, organ systems. Initially, molecules combine to form cells. These cells then organize into tissues. Following this, tissues come together to form organs, which are capable of carrying out specific functions within the body. And ultimately, organs work together to form organ systems, such as the skeletal and muscular systems. A group of organ systems then constitutes the entire organism.