Answer:
The products of the digestive system are actually tied directly to the circulatory system in that the organs of the digestive system are used to turn ingested food into products that can be absorbed by the blood and then carried to other organs for use as energy or other functions.
Step-by-step explanation:
b) Villi
The digestive and circulatory system is connected by villi.
It is the tiny finger-like projections that line inside of small intestine. Therefore, option (b) is the answer.
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