Answer:
peace is the freedom from disturbance
For a researcher that wants to study mortality rates an information that is not about mortality, or the lenght of human life would not be relevant. So we can reject answers that mention wealth (A and B) or infrastructure (C).
The correct answer is the one that lists the relevant information: the lenght of life.
Correct answer:
D. A set of newspaper articles listing the age of each deceased person in various British cities over several years
Civil war, labor shortage, and invasion all have contributed to the decline of Rome. The only thing that did not contribute to the fall of Rome is the population growth. Other reasons to why Rome fell were overexpansion and the economic trouble.
The answer would be letter A.
I'm guessing you would use a persuasive presentation in order for them to be able to relate to the situation or topic. The audience should relate to having the same thought process as the topic that is being discussed. You also would like your audience to ask themselves if the information is backed up by real facts. Sorry if I am answering incorrectly but I'm guessing I understand what you are asking.