Final answer:
Protein is high in fiber and has the least impact on slowing the body's absorption rate of alcohol.
Step-by-step explanation:
Out of the 40 foods listed, the option that is high in fiber and has the least impact on slowing the body's absorption rate of alcohol is protein. Fiber, although not digested or absorbed, provides bulk for the digestive tract and holds onto unhealthy substances to prevent their absorption. On the other hand, protein does not impact the absorption rate of alcohol.