From the context of the question, I am going to say placebo. This is me assuming, however, that both groups were told that their drinks had the protein powder
~Hello there! ^_^
Your question: Dietary supplements can help make up for nutrients missing from our diet. Which supplement would most likely be recommended for someone suffering from anemia?
Your answer: Iron is the supplement that would most likely be recommended for someone suffering from anemia.
Hope this helps~
Preparing it with oil or grilled could change
