Background: Hepatitis B is a disease of the liver. It is caused by a virus called hepatitis B, which can be passed through sexual activity. Hepatitis B causes vomiting. It also causes yellowing of the skin and eyes. The disease goes away on its own in some people. Other people are sick for the rest of their lives. In these people, the virus usually damages the liver. It may also lead to liver cancer. Medicines can help prevent liver damage in these people. There is also a vaccine to protect against hepatitis B. Paragraph: Keith is a doctor in a local hospital. Today, he is seeing three patients, patient A, patient B, and patient C. Patient A has been suffering from hepatitis B all his life; patient B is recovering from hepatitis B on his own; and patient C doesn't have hepatitis B. Keith would now compare the symptoms of these patients. Given the paragraph above, please answer correctly the following question: Which patient's symptoms would less likely include vomiting, patient A or patient C?
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Answer: patient C

Background: Besides anthropogenic productivity of the land, the biodiversity of degraded land also declines, as previously mentioned.[12] With less biodiversity, this ecosystem is less adaptable to when disasters strike it[11][8] It has a smaller available food supply, in terms of plants, for animals, who then may die out or more likely may relocate. Proof of this decline is that presently 15-20% of Tibetan Plateau species are now considered endangered; and now because of this animal and plant absence, the soil quality of these degraded lands is very poor.[1] It does not hold the necessary nutrients, such as water, nitrogen, and carbon, essential to either supporting life or inviting life back to that land.[6] As a result of such carbon and nitrogen loss in the Tibetan Plateau, $8,033/ha and $13,315/ha were respectively lost in economic terms. Soils are further weakened by dust storms whose frequency increases because of degradation.[11][4] Erosion of soil becomes a bigger problem, since no longer are there as many plants to anchor in the soil. In the northern Chinese province alone, 400 million are affected every year with an associated 54 billion yuan of annual economic loss due to grassland degradation. Paragraph: The extensive grazing in Tibet lead to carbon and nitrogen loss, subject to desertification, while Nepal adopted a different approach to food production, putting nature and biodiversity first. Given the paragraph above, please answer correctly the following question: Which country resourced to a less extensive grazing of the grasslands?
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Answer: Nepal

Background: You may hear males "ribbiting," producing a mating call used to attract females to the bodies of water best for mating and breeding. Frog calls can occur during the day or night. Each frog species has a different call that is used to attract mates and warn off rivals. When a female picks a male whose call she likes, the male grabs her and squeezes across her back and around her abdomen. This causes the female to release her eggs. The male then fertilizes the eggs and, in some species, also guards them. Paragraph: Sandra liked all creatures but loved to study frogs. Her sister Julie studied more about fish and butterflies. They both loved nature. Given the paragraph above, please answer correctly the following question: Which sister heard more male frogs "ribbiting"?
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Answer:
Sandra