Amicrobiologist plated a bacterium on a some medium. after incubation, she noted that the previously yellow medium was now hot pink and there were numerous bacterial colonies of various colors growing on the medium. what type of medium did the microbiologist use in this example?

Differential

Explanation:

According to my research on studies conducted by various microbiologists, I can say that based on the information provided within the question the medium being used is called a Differential Medium. This is a bacterial growth media that contains specific ingredients in order to allow the scientists to visually observe and tell the different bacteria apart. Which is how the microbiologist differentiated the bacteria in this situation.

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the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.