Major threats to pioneer life and limb came from accidents, exhaustion, and disease. Crossing rivers were probably the most dangerous thing pioneers did. Swollen rivers could tip over and drown both people and oxen. Such accidents could cause the loss of life and most or all of valuable supplies.
Answer:
This risk is known as the overjustification effect.
Explanation:
This effect is a phenomenon in which an individual loses his/her intrinsic motivation (motivation from internal factors) because of being rewarded by something. This means the individual is less likely to do something if he/she is rewarded by outside factors.
In this case, since the individual is required to carry out community service because of external factors such as a requirement by a school or business, his/her motivation to do it in the future because he/she wants to will diminish, thus the <em>overjustification effect is the risk. </em>
