A Survey Would Be a Good Investigative Tool for a Social

A survey would be a good investigative tool for a social psychologist to answer which of the following questions?

A) How willing are people to help someone needing medical assistance in a shopping mall?
B) Do people take longer to pull out of a parking spot if they notice another car is waiting?
C) Do people under increased time pressure give less generous donations?
D) What is the relationship between people's assessment of the risks of West Nile virus and their behaviour in preventing it?
E) How willing are people to donate money to a well-known charity for disaster relief?