B. They earned more money than their parents.
Being in risk of an injury can cause a death of its not treated well. You may get an infection which could lead to fatal death.
If the child missed school how are they supposed to get an education so they can have a brighter path in their life for their future? That’s going to be a negative consequence.
If a job is dangerous you are already in the risk of dying, getting a wound, or possibly getting killed. That’s definitely a negative consequence.
Your best choice would be B because even though they are getting more money than their parents they’re still wanting money and at the end of the day that’s the only thing that matters.