49. What source of information did they use? West Frontier staffers visit the Regional Health Unit to interview the health workers regarding their work conditions. What source of information did they use?
a. Primary source
b. Secondary source
c. Indirect source
d. Ultimate source

50. Tommi reads articles related to COVID- 19 and watches the news in order to support her sister who is a nurse. What source of information did Tommi use?
a. Primary source
b. Secondary source
c. Indirect source
d. Ultimate source