I read this background article the other day: Boys and girls between the ages of 9 and 13 should get 9 mg of iron every day. Girls between the ages of 14 and 18 should get 15 mg of iron every day. Boys between the ages of 14 and 18 should get 11 mg of iron every day. Pregnant women need the most iron27 mg daily. Good sources of iron include shellfish, such as clams and oysters. Red meats, such as beef, are also a good source of iron. Non-animal sources of iron include seeds, nuts, and legumes. Breakfast cereals often have iron added to them in a process called fortification. Some good sources of iron are listed below ( Table below ). Eating vitamin C along with iron-containing food increases the amount of iron that the body can absorb. I am facing a new situation today: A brother and sister are going to the doctor to get their physical done before the start of the school year. Jessica, the sister, and Mike, the brother, are both in the same grade in high school. Neither are having any issues, but are simply going as a precautionary measure in case there is something the doctor can find out. Also, it's a requirement to get regular physicals in order to attend schools so that's another major reason both are going. Using the knowledge I acquired from the background article, how should I answer correctly the following question regarding my new situation: Who needs more vitamin C in their diet?
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Answer: Jessica

I read this background article the other day: An allergy is a disease in which the immune system makes an inflammatory response to a harmless antigen . Any antigen that causes an allergy is called an allergen. Allergens may be inhaled or ingested, or they may come into contact with the skin. Two common causes of allergies are shown in Figure below . Inhaling ragweed pollen may cause coughing and sneezing. Skin contact with oils in poison ivy may cause an itchy rash. Other common causes of allergies include dust mites, mold, animal dander, insect stings, latex, and certain food and medications. Symptoms of a common allergy such as pollen can include sneezing, a runny nose, nasal congestion and itchy, watery eyes. I am facing a new situation today: A pharmaceutical company is trying to find the cure for allergy. To that end, they conducted an experiment with two groups of subjects, group A and group B. They exposed the participants in group A to allergen, but they didn't expose the participants in group B to any allergen. The symptoms of these two groups would help them find the cure for allergy. Using the knowledge I acquired from the background article, how should I answer correctly the following question regarding my new situation: Which group's subjects would most likely not start coughing, group A or group B?
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Answer: group B

I read this background article the other day: Astronomy is very sensitive to light pollution. The night sky viewed from a city bears no resemblance to what can be seen from dark skies.[78] Skyglow (the scattering of light in the atmosphere at night) reduces the contrast between stars and galaxies and the sky itself, making it much harder to see fainter objects. This is one factor that has caused newer telescopes to be built in increasingly remote areas. I am facing a new situation today: Whenever Bill visited Tim's house, they couldn't see that many stars when stargazing . Tim lived in the city. The sky was much clearer at night at Bill's place, because he lived in a rural area. Using the knowledge I acquired from the background article, how should I answer correctly the following question regarding my new situation: Where do they experience increased contrast between starts and galaxies and the sky itself, at Tim's or at Bill's?
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Answer:
at Bill's