​A programme or piece of code that is loaded onto a person's computer without his/her knowledge and runs against his/her wishes is a type of malware called:​

Correct option is A

The correct answer is (A) Virus.

Explanation:

• A Virus is a type of malware that attaches to a legitimate program, replicates itself, and spreads, often causing damage.

Incorrect Options Explanations:

• Trojan Horse: Masquerades as a harmless program but carries out harmful actions.
• Spyware: Monitors user activity secretly but doesn't directly harm the system.
• Zeus: A Trojan that steals banking information, but not a general malware type.

Information Booster:

• Virus: Infects files or programs, spreads, and damages systems.
• Prevention: Use antivirus software, avoid suspicious files, and keep the system updated.