The above question wants to analyze your reading and writing skills. This must be presented by an answer written by you, for that reason I cannot write an answer for you, but I will show you how to do this.
First, you should read Rudyard Kipling's text to which your question is related and understand how the author develops the theme of what it is to be an adult.
You can search for articles that analyze this text and help you understand this topic better.
After that, you can write your answer as follows:
You can find more information about what is the theme of a text in the link:
https://brainly.com/question/25265206