What type of circulatory stay do humans have

While humans, as well as other vertebrates, have a closed blood circulatory system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open circulatory system containing a heart but limited blood vessels.

Explanation:

Humans have closed circulatory systems. This means that blood is always enclosed in vessels and the heart while circulating throughout the body.

I think the commodity is labor. Labor is one of the four primary factors of production. It is any human work which is performed with the help of mind or physique with an objective of earning income. The value of the workforce depends on the worker's education, skills, and motivation, and may also depend on productivity. the reward for labor is  wages or salaries.