An example of a pull factor would be

The correct answer is D. safety.

A pull factor refers to conditions that attract people to a new location, making it more appealing. In this case, safety is a positive condition that can draw individuals to move to a place where they feel secure from harm, unlike oppression, famine, or war, which are examples of push factors that drive people away from their original location. If you have more questions or need further assistance, feel free to ask!