Which of the following viruses tries to hide from anti-virus programs by actively altering and corrupting the chosen service call interruptions when they are being run?

A macro virus infects documents and templates, using macro programming languages, but does not primarily focus on altering service call interruptions for stealth.

A stealth virus actively hides its presence by intercepting requests from the operating system or antivirus programs and returning clean, uninfected information instead. A tunneling virus can also bypass antivirus software by installing itself into the interrupt handler chain, thereby 'tunneling' under the operating system to intercept disk read requests.

A cavity virus attempts to hide by installing itself into empty areas or 'cavities' within a legitimate program's file structure without increasing the file size, rather than corrupting service calls.

A polymorphic virus changes its own code (mutation engine) with each infection to avoid signature-based detection, but its primary method isn't to alter service call interruptions.