Question

which system is responsible for the transportation of oxygen throughout the system?
respiratory system
circulatory system
digestive system
endocrine system

Explanation:

The circulatory system, which includes the heart, blood vessels, and blood, is responsible for transporting oxygen (along with nutrients and hormones) throughout the body. The respiratory system brings oxygen into the body (through inhalation) and releases carbon dioxide (through exhalation), but it is the circulatory system that then distributes the oxygen. The digestive system is for breaking down food and absorbing nutrients. The endocrine system is for producing and secreting hormones.

Answer:

circulatory system