Why do we need redux in a React build?

Question

React

Hello, one fine day I was offered a job and was told to write an application in the Webpack+React+Redux+Less assembly as a job to accept. I absolutely do not understand where to stick Redux in this application. Here is the link to the assignment:
https://gist.github.com/geksilla/72a0cb882d2b7d8b4336

Answer 1

Redux is just a store that provides unidirectional data flow. So store three arrays in it: authors, books and genres.

Answer 2

so maybe it's not needed there?