When barbara's friend fails to get a full-time job right out of college, she assumes that this is because of his laziness and lack of qualifications. she fails to take into account the competitiveness of the field he is entering and the lack of entry-level jobs in their city. this is an example of

fundamental attribution error

Explanation:

Fundamental attribution error is the inclination to explain someone else's behavior by attributing the cause to be the result of the other person's internal factors. External factors are not considered here.

Here, Barbara has explained the reason for her friend to not a get a job because of his laziness and lack of qualifications. These are the internal factors of the other person. Though they might be true she is not considering the competitiveness of the field he is entering and the lack of entry-level jobs in their city which are external factors.