Randa just failed her history exam because she neglected to study. Afterwards, she attributes her failure to the fact that her boyfriend kept her up too late the night before when he refused to turn down the stereo so that she could sleep. The next day she aces her biology test. Randa attributes her success on it to her own intelligence. Randa appears to be engaging in which attributional bias?

Self-serving bias                                                                              

Explanation:

Self-serving bias is considered as a cognitive bias that is being widely used in the field of "social psychology" and was proposed by Fritz Heider.

In psychology, the term self-serving bias is described as an individual's propensity of attributing a few positive events to his or her character yet attributes a few negative events to any of the external factors.

In the question above, the given statement represents the "self-serving bias".

the answer is d. amendments.