Which of the following testing techniques would be BEST to use?

A DevOps administrator is automating an existing software development workflow. The administrator wants to ensure that prior to any new code going into production, tests confirm the new code does not negatively impact existing automation activities.

Which of the following testing techniques would be BEST to use?
A . Usability testing
B . Regression testing
C . Vulnerability testing
D . Penetration testing

Answer: B

Explanation:

Reference: https://www.softwaretestinghelp.com/regression-testing-tools-and-methods/