Where can you store the file so it is in the default execution path and persists across sessions?

You are using Cloud Shell and need to install a custom utility for use in a few weeks.

Where can you store the file so it is in the default execution path and persists across sessions?
A . ~/bin
B . Cloud Storage
C . /google/scripts
D . /usr/local/bin

Answer: D

Explanation:

https://medium.com/google-cloud/no-localhost-no-problem-using-google-cloud-shell-as-my-full-time-development-environment-22d5a1942439