[Q]: John was studying about the history of Sahara desert. He was amazed to find that ten thousand years ago there were plenty of rainfall in that region. He labeled that era as era A. Then he found that rainfall deceased in the region about eight thousand years ago. He labeled that era as era B. He was wondering how that change in rainfall might have helped emerge the Egyptian civilization. In which era new surfaces would be exposed, era A or era B?
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[A]: era A

[Q]: John is a doctor at the children's hospital. He had two different cases to investigate, case A and case B. In case case A, a baby continued to suckle mother's milk. But in case B, a baby stopped suckling mother's milk. He had to determine the different effects these two cases were causing. In case B would less or more milk be produced than in case A?
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[A]: less

[Q]: Jeffrey is an avid grower of plants and he currently has some daisies and roses in his bedroom. Jeffrey's friend Robert gives Jeffrey a bottle of gibberellins one day and tells Jeffrey to pour some of the bottle onto the daisies. Jeffrey doesn't question this, because he is very trusting of his friend Robert, and pours the gibberellins onto the daisies, but not onto the roses. Which plants will grow faster, the daisies or the roses?
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[A]: the daisies

[Q]: Dan found three rattle snakes: one only had one rattle, the second snake had 4 rattles and the third snake had seven rattles on its tail. Which snake had more segments, the first or the third snake Dan found?
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[A]:
the third