it is either the first one or the third one
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
Population Density- measurement of population using volume or unit area.
Hoped I helped:D
<span>Douglas McCauley argues we should protect natural resources by valuing their cultural significance to humans. His research is based on the study of ecology to advance conservation and looking for creative ways to contact the public and the natural world. </span>
