Which of the following is a subsystem of an organism?Please explain and I give you 5 stars. A. cell
B. organ system
C. tissue
D. all of the above

D

Explanation:

In multicellular organisms, the body is a system of multiple, interacting subsystems. Subsystems are groups of cells that work together to form tissues. Interactions are limited to the circulatory, excretory, digestive, respiratory, muscular, and nervous systems.