Answer:
d. eustress
Step-by-step explanation:
Eustress is a form of beneficial stress, which consists of increased motivation and positive thinking, as opposed to distress, which is a type of stress that causes anxiety, fear, demotivation.
It is correct to say that Jonathan's answer can be classified as eustress, because despite being assigned to a challenging project, his feelings were motivating to use his skills to complete the project effectively.