Computer virus is a

The correct answer is (d) Software program.

A computer virus is a type of malicious software that, when executed, replicates itself by modifying other computer programs and inserting its own code. Viruses can damage files, steal data, and even take control of your computer.

Option (a), fungus, is incorrect because a fungus is a type of plant.

Option (b), bacterium, is incorrect because a bacterium is a type of microorganism.

Option (c), IC 7344, is incorrect because an IC 7344 is a type of integrated circuit.