Answer: C. Ken's favorite color is red
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Step-by-step explanation:
We're told that Dmitri and Adam do not like red. So that must mean that Ken likes red. This immediately leads to choice C as the answer. This is assuming that each boy picks one of the three colors (and no colors can be repeated).
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Extra info:
- Choice A is false because we're not sure if Dmitri likes blue or green. We don't have enough info.
- Choice B is false because someone has to pick green. There are three boys and three colors. Again I'm assuming each person picks one color and the colors aren't repeated.
- Choice D is false because it contradicts choice C.