Hi. You didn't submit the part of the text that features the metaphor. This makes it impossible for this metaphor to be analyzed and for an opinion to be issued. However, I will try to help you as best I can.
A metaphor is a figure of speech that presents a comparison between two elements. This comparison is made implicitly, but it is possible to see that the author of the text is establishing a relationship between the two elements. To analyze this comparison, you must locate the place in the text where this metaphor is established, you already know that this metaphor is related to the ants and the umbrella, which makes it easier for this metaphor to be located in the text.
To show your opinion about this metaphor, you must understand what is being compared in the metaphor. When you understand this, you can give your opinion on whether this comparison has deep meaning, whether it presents a lesson to the reader, whether it adds humor to the text, whether it adds a dark tone, among other things.
