Answer: The correct answer is: Internal Locus.
Step-by-step explanation:
Internal locus of control is the degree in which individuals feel that they have control over external outcomes or events. A person with an internal locus of control sees the influence that they have over life outcomes, instead of giving the responsibility to external forces.
In this particular case, the fact that Jana said to her teacher and other adults that the reason why she gave a stellar performance is because she worked really hard to develop the character's wacky disposition goes to show that she attributed her success to her own habilities and effort, thus showing Internal Locus.
In conclusion, the answer is C. Internal Locus