Which system helps in transporting nutrients and waste products throughout the body?

The circulatory system is primarily responsible for transporting nutrients, oxygen, hormones, and waste products throughout the body. This system includes the heart, blood vessels, and blood, which work together to ensure that every cell receives the necessary substances to function properly while also removing metabolic waste.

Nutrients absorbed from the digestive system are delivered to cells via the bloodstream, while carbon dioxide and other waste products are transported back to the lungs and kidneys for removal from the body. The efficiency of the circulatory system in managing this exchange is vital for maintaining homeostasis and overall health.

In contrast, the digestive system primarily focuses on breaking down food to absorb nutrients; the respiratory system is responsible for gas exchange and the intake of oxygen; and the nervous system manages bodily functions and responses but does not directly involve the transport of substances throughout the body. Thus, the circulatory system is key for nutrient and waste transport, making it the correct choice.