I could be wrong, but I would think 'verb'.
Hopes this helps!
The answer is A:parents should set a good example for their children
- North America has a long, rich history in ultrarunning, one that stretches back thousands of years. ... On their runs they would carry a dried buffalo heart. .... This ability to cover ground on foot was of paramount importance. ... The came over, when there was still ice connecting Asia to America, they came ...
