The tendency for observers to underestimate the impact of the situation and overestimate the impact of inner dispositions upon another's behavior is called
a. the self-serving bias
b. the false consensus bias
c. the fundamental attribution error
d. cognitive conceit

The fundamental attribution error

Explanation:

The fundamental attribution error also called an over-attribution effect or a correspondence bias. It is an explanation about the attribution of the behavior that is observed in other people and underestimates the situational disposition. This term has been proposed by Lee Ross in 1977. People see other people to be motivated internally and responsible for their behavior.  

Thus here the observer whom to overestimate the impact of inner disposition on another behavior and underestimates the impact of the situation is called the fundamental attribution error.  

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