Final answer:
People with higher core self-evaluation scores tend to choose complex and more challenging work, as they have higher self-confidence and believe in their ability to overcome challenges.
Step-by-step explanation:
Individuals with high core self-evaluation scores tend to have a positive self-outlook and are confident in their capabilities. This positive self-assessment leads to behaviors that demonstrate a higher belief in themselves and their ability to succeed. So, the answer to the question 'Which is true concerning people who have higher core self-evaluation scores?' is that they tend to choose complex and more challenging work. These individuals are likely to be confident, have a strong belief in their own abilities (self-efficacy), and think that they have control over their lives (internal locus of control), which means they prefer tackling more demanding and intricate tasks that provide a sense of achievement and personal growth.