Answer:
d. external; internal
Step-by-step explanation:
After the first science test, she attributed the reason of her bad grade to an external source: the teacher's competence.
After the second test, she attributed the reason of her good grade to an internal source: herself, her intelligence and her proficiency in science.
Was she right? I don't think so... because if the teacher was the cause of the failing of the first test, how come the same teacher produced a whole different result on the second test?