Question 104

### What is the recommended practice for treating environment variables in GitHub Actions, regardless of the operating system and shell used? > https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions 1. [x] treat environment variables as case-sensitive 1. [ ] use only uppercase letters for environment variable names 1. [ ] ignore case sensitivity as GitHub Actions handles it automatically 1. [ ] depend on the behavior of the operating system in use