Question: Drought is major concern in the Midwest. To confront the problem scientists are trying to develop drought-resistant crops. To that end, they took a plant that was not exposed to drought. They labeled it as plant A. Then they took a similar plant, and repeatedly exposed it to drought. They labeled it as plant B. They wanted to find out what makes a plant drought-resistant. Which plant would not change the regulation of their stomata, plant A or plant B?
Answer: plant A

Question: John wanted to know what makes a lake different from a pond. To that end, he first visited a lake. He labeled that part of the study as case A. Then he visited a pond. He labeled that part of the study as case B. John realized that though both of them were water-bodies, they were very different. Which water-body would be deeper, case A or case B?
Answer: case A

Question: Margaret is a mother currently in the middle adulthood stage of her life. Margaret's daughter, Vanessa, hasn't reached middle adulthood yet, and is still a teenager. Both of them enjoy reading beauty and fashion magazines so they can find age-appropriate tips on how to improve their look. Who is more likely to begin developing gray hair?
Answer:
Margaret