Case Studies:
Studying or recording one subject, and/or the subject's life and developments over long periods of time (sometimes over the course of their whole lives)
Surveys:
A study tool to collect data amongst several individuals in a population. May be used to find out factual information, or simply one's opinion on a certain topic.
Naturalistic Observation:
Observing subjects in their natural environments! (Like observing a child's behaviors at home, where they feel most comfortable. When observing in places where they may not be comfortable, behavior of the subject is due to change.)
I would say c just because so many banks closed and shut down cause they were basically broke
I believe the answer is: 15-19 years old
The high number is caused by incompetent skills and driving under influence which seems more prevalent on this age group.
If put into a comparison, drivers within the age of 15-19 years old is 3 times more likely to be involved in an accident compared to the drivers that are 20 years old or older.
Check their blind spot and use blinker