Question

what system of an animals body delivers oxygen and glucose to all the different cells?
the circulatory system
the nervous system
the skeletal system
the endocrine system

Explanation:

The circulatory system, with its heart, blood vessels, and blood, transports oxygen - rich blood and nutrients like glucose to all body cells. The nervous system is for transmitting signals, the skeletal system provides support and protection, and the endocrine system is for hormone - based regulation.

Answer:

The circulatory system