Distinguish cells, tissues, organs, and organ systems both structurally and functionally.

The levels of Organization are, Cellular, Tissue, Organ, Organ System, and Organism. Cells make up Tissues, russues make up organs, organs make up organ sysyems, organ systems make up the organism. Cells are the basic unit of life. Their main function is to multiply and carry DNA. Tissues main function is to surround the organ to make it safe. Organs job depending on the organ is to perform different acts such as digesting, breathing, sorting through your intake of carbs, or holding waste. Organ systems work together to keep the organism alive and well.

Iwould say read. (b)