Mark cannot decide which video game to purchase. After thinking it over, he buys the latest fighting game rather than a soccer game he liked just as much. As he leaves the store, he feels uncomfortable tension.
In order to resolve this tension, Mark must engage in:

a) self-perception processes.
b) introspection.
c) self-verification.
d) dissonance reduction.

(D) Dissonance reduction  

Explanation:

  The dissonance reduction is one of the process in which the person are trying to reduce or minimize the uncomfortable psychological condition with the helps of change the behavior and the attitude of the individual person.  

 The dissonance is reduced by using the main concept that is cognitive system and we can reduce the value of the different types of cognitions among each element in the system.

 According to the given question, the mark must engage in dissonance reduction process for the purpose of resolving the uncomfortable tension regarding the purchasing of latest fighting video game.

 Therefore, Option (D) is correct answer.

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