Which of the following is an advantage of using a longitudinal design?

Question

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Longitudinal designs involve following the same group of participants over a period of time, allowing researchers to assess age changes in behavior, cognition or other variables of interest. This is a major advantage of using such designs. Choice A is also true, as it allows researchers to assess cohort effects (differences or similarities between groups of people born in different years). Choice B is not necessarily true since longitudinal designs can be more expensive than cross-sectional designs. Choice C is not relevant because practice effects (the influence of prior testing on performance) are minimized in a repeated measures design, which can be either longitudinal or cross-sectional.

Which of the Following Is an Advantage of Using a Longitudinal