David Conducts a Historical-Comparative Study of the Terrorist Attacks on September

David conducts a historical-comparative study of the terrorist attacks on September 11,2001.When he considers counterfactuals,he

A) lays out conflicting accounts of the events of the day.
B) describes all the false facts,both intentional and unintentional,that developed after the event.
C) thinks about what would have happened in society if the terrorist attacks had not occurred.
D) asks another sociologist to review his study,looking for bias and errors of fact.