nav_graph.xml Location

[cjparent]

URL of codelab:
https://developer.android.com/codelabs/basic-android-kotlin-compose-app-with-views?continue=https%3A%2F%2Fdeveloper.android.com%2Fcourses%2Fpathways%2Fandroid-basics-compose-unit-8-pathway-1%23codelab-https%3A%2F%2Fdeveloper.android.com%2Fcodelabs%2Fbasic-android-kotlin-compose-app-with-views#4

Specify the language of the codelab if it is not English:

In which task and step of the codelab can this issue be found?
Step 5 - "Modify the Navigation Component"

Describe the problem
The student is instructed to open the nav_graph.xml, however given this is the first time it is introduced, it should be explicitly defined it is located under main.res.navigation