Answer:
Answer: Option A and B.
Organ system and tissues.
Step-by-step explanation:
The earthworm is a segmented worm that belongs to the phylum annelids. The earthworm has a close circulatory system just as human beings which means their blood circulates through a closed network of vessels which are connective tissues. The earthworm has a structure of 5 hearts and they are called aortic arches which are organ systems. These pump blood into a network of vessels and its flows through the body. From there, the blood moves to a dorsal blood vessel which sends blood to the front of the Earthworm, then to the ventral blood vessel which sends blood to the posterior. At the intestines, there are lateral vessels that carry nutrients away from the gut and to the body.
Credits to adeoladokun31 for sayin' this
Jm~ hope this helps you out...