Question

question 3
a blank has no constant section of code.
network virus
boot virus
polymorphic virus
macrovirus

Explanation:

Polymorphic viruses are designed to change their code with each infection to avoid detection. They do not have a constant section of code as their encryption and mutation algorithms modify their structure. Network viruses spread through networks, boot viruses infect boot - sectors, and macro viruses are embedded in documents with macros, none of which have the characteristic of constantly changing code like polymorphic viruses.

Answer:

C. Polymorphic virus