Which type of malware is designed to replicate itself and spread to other computers?

The type of malware designed to replicate itself and spread to other computers is referred to as a virus. A virus attaches itself to legitimate programs or files and, when executed, can cause damage or unwanted modifications to the system it infects. As users share or transfer these infected files to other computers, the virus can continue to spread, potentially creating widespread effects across multiple systems.

While the other forms of malware such as Trojans, spyware, and worms have their own unique characteristics and methods of operation, they do not replicate in the same way. Trojans disguise themselves as legitimate software without self-replicating capabilities. Spyware focuses on gathering user information without consent and doesn't replicate or spread itself. Worms do replicate and spread autonomously across networks but are distinct from viruses in that they do not require a host file to execute. Thus, in the context of self-replicating and spreading, a virus is the correct choice.