Correct option is A
• Worms are malicious programs that can self-replicate and spread across networks without user action.
• They infect multiple systems quickly through network connections.
Information Booster:
• Worms do not need a host file to spread.
• They can cause network congestion and system damage.
Additional Knowledge:
• Trojan Horse (Option B) – disguises as legitimate software
• Adware (Option C) – displays unwanted ads
• Virus (Option D) – needs user action to spread