Mark Is a Graduate Student Who Is Studying Identity Formation

Multiple Choice

Mark is a graduate student who is studying identity formation.He interviews a group of 5-year-olds,a group of 10-year-olds,and a group of 15-year-olds,and asks them what they plan to be when they finish school.In this example,Mark is using a __________ research design.

A) longitudinal
B) cross-sectional
C) sequential
D) multi-factorial