Tucker Is a Graduate Student Who Is Studying Identity Formation

Multiple Choice

Tucker is a graduate student who is studying identity formation.He selects a group of 5-year-olds,a group of 10-year-olds,and a group of 15-year-olds,and interviews each group,asking them what they plan to be when they finish school.In this example,Tucker is using

A) a longitudinal research design.
B) a cross-sectional research design.
C) a multi-factorial research design.
D) a nested condition research design.