This is also called sanity testing and is done in order to check if the application is ready for further major testing and is working properly without failing up to least expected level

Smoke testing is also known as sanity testing. It's a preliminary testing phase that verifies the most critical functions of an application work before proceeding to more comprehensive testing. The term comes from hardware testing where you plug in a device and check if it smokes. Adhoc testing (A) is informal but not specifically sanity-focused, Compatibility testing (B) checks cross-platform behavior, and Mutation testing (D) involves modifying code to test test suites.