Question

Which internal system is responsible for transporting oxygen and nutrients through an animal's body?

A: digestive system
B: circulatory system
C: respiratory system
D: central nervous system

Answer 1

Circulatory system

Step-by-step explanation:

pulmonary artery plays a role of transporting oxygen from the lungs back to the heart...

And also most blood vessels transport nutrients to and from the heart

Answer 2

B: circulatory system

Step-by-step explanation:

The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.