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Examveda

Nine year olds are taller than seven year olds. This is an example of a reference drawn from

A. Vertical study

B. Cross-sectional study

C. Time series study

D. Experimental study

Answer: Option B

Solution(By Examveda Team)

Nine year olds are taller than seven year olds. This is an example of a reference drawn from cross-section study.

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