In Conducting Longitudinal Research,a Panel Design Has Several Advantages

Multiple Choice

In conducting longitudinal research,a panel design has several advantages.These include

A) an ability to do research at a low cost.
B) an ability to track individuals over the course of time.
C) an ability to collect data that reflects immediate experience rather than relying on individual memory.
D) both the ability to track individuals over the course of time and the ability to collect data that reflects immediate experience rather than relying on individual memory.
E) all of these.