The most evident theme in the passage is loss of innocence, but it seems that we should choose more than one, in which case value of family should be included.
First, let's pay attention to the way the question is phrased. We are being asked which themes "are" evident in the story, which indicates that we should choose more than just one theme. A theme is a message we can find in the story, an idea that pervades what the narrator is saying.
We can notice two themes in the passage from "Marigolds":
With the information above in mind, two themes can be chosen: loss of innocence and value of family.
Note: If, for some reason, the question is not well-phrased and only one theme can be chosen, the best option is loss of innocence.
Learn more about theme here:
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