Chandra and colleagues surveyed participants three times over the course of a 3-year period to examine the relationship between exposure to sexual content on television and teen pregnancy. This is an example of a(n) _____ study.

A) panel
B) focus group
C) internet-based
D) archival

Panel Study

Research in which the same sample of subjects is studied at two or more points in time, usually to assess changes that occur over time.

Focus Group

A research method that gathers a group of people to discuss a particular topic or product in detail, guided by a moderator.

Internet-Based

Pertaining to activities, methodologies, or interactions that occur or are facilitated through the Internet or online platforms.