Answer:
The correct answer is D
Step-by-step explanation:
Self- serving bias is the term which is defined or described as the tendency of people who attribute the positive events to their own character and attribute the negative events to the external factors.
This bias is the common kind of cognitive bias which is extensively studied in the social psychology.
So, in this case, Helena provide the example of the self- serving bias as when she did not reach the goal, then she stated that her failure is due to poor economy which means she attribute the negative event to external factors.