When a Researcher Has Only Cross-Sectional Data but Wants to Apply

Multiple Choice

When a researcher has only cross-sectional data but wants to apply longitudinal strategies,he or she may be able to if:

A) participants are able to remember past events.
B) age differences can be discovered in the cross-sectional data.
C) time order of variables is explicitly clear.
D) cohorts are available.
E) all of these choices are correct.