Attribution theory is which of the following?
a. The tendency for observers to overestimate the importance of internal traits and underestimate the importance of external situations
b. The view that people are motivated to discover the underlying causes of behavior, theirs as well as others
c. The view that an individual can have fast-acting, self-fulfilling fears of being judged on a negative stereotype
d. The processes by which we use social stimuli to form impressions of others

The attribution theory suggests that people tend to pass judgment about the behaviors of others as well as their own. It is assuming the reason behind the action or behavior of others.

For example, if you and your friend planned to go out for a movie and he later phoned and said that he could not come. What will you assume or attribute this action of your friend? This assumption that we make is known as the attribution theory.

The theory of attribution was first proposed by Heider in 1958 but later was developed by Jones and Davis, in their inference theory, and Kelley's Covariation Model theory.

So, the correct option from the choices is B.