<span>The answer should be B. The results of a previous experiment are presented as an introduction to a new experiment.
Material that used for </span>presentation of background research should have a credible information. A<span>mazing new drug is described in a television commercial mostly false and it is not backed up by scientific study. Rumor from </span><span>second-hand accounts definitely not credible. A newspaper is not a scientific study and could give false information.</span>
I believe the answer is B. Osmosis is the diffusion of water: so it would be the movement of molecules from high concentration to low. Therefore it is not A and B is the only one relating to water.
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