Dan studied two groups of individuals. Group S that had sickle cell anemia, and group B which had normal hemoglobin. He was fascinated by the results. Given the paragraph above, please answer correctly the following question: Which group had more members that may inherit the gene from one parent and have sickle cell trait?
Ans: Group S

Sam is going to visit his grandfather. His grandfather lives in a retirement home and can barely take care of himself anymore. Given the paragraph above, please answer correctly the following question: Will Sam's grandfather have a strong or weak immune system given his age?
Ans: weak

Mike was visiting the African Savannah. One animal that interested him most was the African Buffalo. He noticed that the buffaloes would usually live in a large herd, often exceeding few hundreds. He noted that as case A. But sometimes the buffaloes would live in a small herd. He noted that as case B. Interestingly, there are incidents when an aggressive male buffalo would live by itself. He noted that as case C. Given the paragraph above, please answer correctly the following question: In case A, would the group get less or more benefit as a whole than in case B?
Ans: less

Bobby and Sally are siblings that currently live in different cities. Bobby lives in a city that has wildfires on a regular basis. The local government is effective at combating these fires, but there are still quite a few over the course of a year. Sally lives somewhere that has never had a wildfire before, and she wasn't even aware they existed until her brother started talking about them. Given the paragraph above, please answer correctly the following question: Would Bobby's chance of getting bronchitis increase or decrease if she moved to Sally's town?
Ans: decrease