Question: Two groups of people were part of a nutrition study that lasted 2 years. Group A had a normal diet, while group B consumed an extra 1000 calories a day for 2 years. Group B gained lots of weight. Which group had fewer people with an increased risk of developing type 2 diabetes?
Answer: Group A

Question: Two parcels of land , parcel Q and parcel H are situated in the same county about 20 miles away. Parcel Q received a greater amount of rainfall than parcel H, therefore the soil was more affected by the rain. Which parcel had more top layers of soil in contact with the freshest water?
Answer: parcel Q

Question: People from two villages ate lots of salt. People from Salt village used regular salt, while people from Sand village people used iodized salt in their diets, after talking to specialists. Which village had fewer people experience developmental difficulties?
Answer:
Sand