Joseph ewoodzie used participant observation in his research about homelessness in jackson, mississippi, because

Because he wanted to investigate an unfamiliar issue in an unfamiliar place, which would take time.

Participant observation is one kind of information gathering technique regularly utilized in qualitative research. This is a procedure of field research utilized in human sciences and sociology, by which a researcher examines the life of a gathering by partaking in its exercises.  

citizens were able to charge more for their goods and services

answer; the above statement is (true);