Question

Christiaan Eijkman shared the Nobel Prize in 1929 for the discovery of vitamins. Eijkman went to Java to isolate the pathogen causing beriberi, an illness that appeared to be contagious as it was common in prisons and among ship crews. Eijkman noticed that chickens fed a diet of white rice also suffered from a similar disorder. When the chickens were fed a diet of red rice, the chickens quickly recovered. Eijkman returned to the Netherlands and persuaded a prison to feed the prisoners red rice, and the incidence of beriberi decreased. What would the next step for Eijkman be?

Answer 1

He already won the Nobel Prize, the heck does he need to do now, he's made it good

but in all seriousness, here's the choices:

A. Humans with symptoms similar to those of chickens should change their diet.
B. White rice contains little nutritional value for humans and chickens.
C. Beriberi is most certainly not a pathogen.
D. Diet may be the cause of beriberi, but more research is needed.

as a major hint, think about the results as you go through each choice - "are the results stated enough to conclude this statement?" if not, move to the next choice.