Final answer:
An adult learner with low self-efficacy is most likely to experience high stress because they doubt their abilities and focus on potential failures making it harder to handle the challenges and setbacks of learning.
Step-by-step explanation:
The adult learner who is most likely to report high stress is someone with a low self-efficacy. Individuals with low self-efficacy tend to doubt their abilities to succeed, are more likely to focus on potential failures, and may struggle to rebound from setbacks. this outlook can result in increased stress levels when faced with difficult tasks or learning new material. On the other hand, someone with a growth mindset tends to see challenges as opportunities for growth, and someone with high self-efficacy has greater belief in their ability to achieve their goals and overcome obstacles, both of which can help mitigate stress.