A Cross-Sequential Design

A cross-sequential design:

A) involves selecting a sample of people who lived through a major cultural event and using archival data to assess how the event affected their lives.
B) begins by studying groups of children of different ages simultaneously and then testing them again at least one more time in the future.
C) involves selecting a group of people of a single cohort, randomly assigning them to experimental conditions, then testing them again at least one time in the future.
D) requires sampling from more than one cultural community.