Answer:
He can infer that beriberi may be related to diet, but more and better studies are needed
Explanation:
We need to see the flowchart to be able to answer the question
Your answer would be C because A affects the natural environment and can cause harm to it, B would affect the surrounding animal population and cause imbalances in biodiversity if they are not able to eat the foods they are used to, and D is not much of a benefit since you are losing the flavor that is naturally in the plants.
Yes, it's A. Spinach and cabbage are (A) the leaves of plants. Spinach do have flowers but they are not the flowers itself while cabbages don't have flowers. Cabbages and Spinach don't have fruits either.
The action in which particles go from a high area of concentration to a lower concentration is called diffusion!
