What is one of the biggest reasons spam is prevalent today? A. Criminals use zombie botnets. B. Regular mail is too slow. C. Spam is popular among recipients. D. Spam is sent from the government.

The right answer is:

B. Regular mail is too slow.

Explanation:

Spam is a type of unsolicited and often unwanted form of marketing and promotion. It reaches more people faster than conventional marketing materials. Unfortunately, it is often a method used by dishonest people and groups to do phishing and steal personal sensitive data, too.