Final answer:
If a market for human organs were allowed, it could potentially lead to a decrease in the number of people who volunteer to donate blood, resulting in a reduced supply of blood for transfusions.
Step-by-step explanation:
A market for human organs would have significant implications for the supply of blood for blood transfusions in the United States. Currently, the blood supply relies on volunteer donors who donate blood for free. If a market for human organs were allowed, it could potentially lead to a decrease in the number of people who volunteer to donate blood. Instead, these individuals may choose to sell their organs for profit, resulting in a reduced supply of blood for transfusions.