A deliberate, politically or religiously motivated attack against data compilations, computer programs, and/or information systems which is intended to disrupt and/or deny service or acquire information which disrupts the social, physical, or political infrastructure of a target. This is known as: a. cyberterrorism.
b. salami technique.
c. cyberstalking.
d. cyberbullying.

a. cyberterrorism.

Explanation:

Cyberterrorism can be defined as an illegal attack against the information stored in a data based done so as to intimidate a target. This is done to coerce a  target to action or to frustrate and destabilize a target.

In this act, the data compilations or information systems is deliberately attacked to disrupt the psychology of a target. It is one of the major tactics used in politics to frustrate the effort of a political system by an opposition.