Answer:
Natives people of America had no immunity to diseases that European explorers and colonists brought with them. Diseases such as small pox, influenza, measles, and even Chicken pox proved deadly to the American Indians. Europeans were used to these diseases, Indian people had no resistance to them.
Base from the advice that has been given to them, it is considered to be a good advice. It is because being able to be distracted means that the person could have more time to think about their decisions. With that, it could help them to be able to come up with the decision that they think would be best for them. That is why the advice that has given to them is a good advice.
The answer is object permanence.
Object permanence refers to the ability to understand that an object is still present and physically exists even if it is hidden out of sight. In this example, your niece lacks object permanence since she does not understand that you are behind the blanket even though you cover yourself with it or you are temporarily.
