Which of the following completes the sentence,'Bots can be programmed to post fake messages to sway public opinion.It's a problem known as _______,in which a seemingly authentic swell of grass-root opinion is in fact manufactured by a battalion of opinionated bots.'?

A) Astroturfing.
B) Spoofing.
C) Phishing.
D) Catfishing.
E) None of these.

Astroturfing

The practice of creating a false sense of grassroots support or opposition, often by hiding the true sponsors of a message or organization.

Spoofing

A malicious activity involving the falsification of communication from a source other than the actual source to deceive or manipulate.

Phishing

A fraudulent attempt, usually through email, to steal personal information by pretending to be a legitimate entity.