The answer to this is C. Radiation Exposure.
Answer: Proactive interference
Explanation:
Proactive interference is a memory disorder this occurs when the old memories of a person restrain the capacity of the brain to retain the new memories. Thus no new information can be retain in the brain. This may happen when the memories are similar. For example, finding difficulty in remembering the new and old phone numbers.
The given situation is an example of proactive interference as the people may find difficult to learn and remember the recently learned materials as the similar information was also learned in the past.
Emma will eat more fast food and have a shorter life expectancy.
When her grandmother was younger there was no such thing as fast food, additives, processed food and food that was produced through unhealthy means. They ate real home cooked food from real ingredients and more than likely ate most of their meals together as a family. Their lifestyle would also have been more active and healthier.
Ask her teacher and friends for help preparing for the paper.