What does the term crowd sourcing mean?
A. canvassing a crowd at an event to find an appropriate source
B. interviewing several sources simultaneously to discourage a source from trying to lead a reporter astray through a misinformation campaign
C. analyzing data to come up with the best information in keeping with the
"wisdom of crowds" theory of
D. sociology gathering information from many people who have experienced or witnessed something via a social media application or Web site
