Daniel Is Interested in Studying How Children's Behavior Changes When

Multiple Choice

Daniel is interested in studying how children's behavior changes when they grow up in high-risk environments. He enlists 500 children and their parents to take part in his research, and observes these children once a year for 20 years. Despite the fact that this research is very time consuming and expensive, it gives very good information about how the children age over time. This type of research is an example of a __________ study.

A) sequential
B) cross-sectional
C) longitudinal
D) continuous