2. studying how people get along with one another a. won't a worker become more productive. b. has little use outside the workplace. c. can improve a person's personal life. d. for most people is a difficult thing to do.

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.