[Q]: Mike is studying for his zoology class. Today, he is studying about reptiles and amphibians. He found it easy to understand their differences by categorizing them. For that, he classified reptiles as class A and amphibians as class B. Would class A animals have less or more efficient respiratory system than class B?
****
[A]: more

[Q]: Michael and Robert are scientists who work in a nuclear reactor facility. Michael was replacing a fuel rod in the nuclear reactor when a small explosion happened, causing Michael to be exposed to high doses of radiation in a short period of time. Robert was in the adjacent room when the explosion happened, and as a result he only suffered low doses of radiation. Who is less likely to suffer skin burns?
****
[A]: Robert

[Q]: Dan had two children: Karen which had sickle-cell anemia, and his son Bob, which was healthy. Which child had a mutated hemoglobin?
****
[A]: Karen

[Q]: Two different types of animals live in the same habitat but have vastly different behaviors. Animals A and B are both the same size which is relatively small. Animal A lives in small groups of 4 or 5. Animal B however lives in very large groups and when they move around they all move at the same time. Both groups are also hunted by the same predator. Which group of animal is likely more fit, animal A of B?
****
[A]:
B