During analysis of collected data, which question(s) will the researcher ask to focus in on specific ...

During analysis of collected data, which question(s) will the researcher ask to focus in on specific actors, events, and activities that relate to the problems or issues at hand?
 
  A) What and how
  B) Why
  C) Who, where, when
  D) Whether

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During analysis of collected data, which question(s) will the researcher ask to help establish the problems and issues, the things bothering the population, and the way these problems intrude on the lives of the people in the group?
 
  A) What and how
  B) Why
  C) Who, where, when
  D) Whether

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To show trends in birth rate from 1980 to the present, by year, a researcher would probably use a
 
  a. pie chart
  b. bar graph
  c. line chart
  d. frequency polygon