Why and what is best experimental design fr testing hypothesis bean plant require sodium?

To test the hypothesis that bean plants require sodium, the best experimental design would be a controlled experiment with two groups: one group of bean plants receiving sodium and a control group without sodium. The plants should be grown under identical conditions (light, water, soil type) to ensure that any differences in growth can be attributed to sodium availability. Measurements such as plant height, leaf number, and overall health should be taken over a specified period. This design allows for clear comparisons and helps isolate the effect of sodium on bean plant growth.