The three steps that apply to any Salesforce development project are:

Develop: This step involves creating the code or configuration for the new feature or change.
Test: This step involves testing the new feature or change to ensure that it works as expected.
Build Release: This step involves packaging the new feature or change into a release that can be deployed to production.
The other two options, Continuous Integration and Change Sets, are specific tools or processes that can be used during the ALM process, but they are not required steps