Correct Answer - Option 2 : Spam
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Inbox: It is an electronic folder in which emails received by an individual are held or An inbox is a folder on a computer or phone where emails are received.
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Spam: Spamming is the use of messaging systems to send an unsolicited message (spam) to large numbers of recipients for the purpose of commercial advertising, for the purpose of non-commercial proselytizing, or for any prohibited purpose (especially the fraudulent purpose of phishing).
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Virus: a computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another. A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code. In the process, a virus has the potential to cause unexpected or damaging effects, such as harming the system software by corrupting or destroying data.
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Attack: In computers and computer networks an attack is an attempt to expose, alter, disable, destroy, steal or gain unauthorized access to or make unauthorized use of an asset.
Conclusion:
From the above discussion, we can conclude that an inbox is a kind of folder to receive a message, spam is the use of the messaging system to send an unsolicited message to a large number of recipients, the virus is a type of malicious code that destroys system software and attack is an attempt to alter or gain unauthorized access to make unauthorized use of an asset. Hence, option (2) is correct.
