English, asked by ivaranasi2gmailcom, 2 months ago

Nine years old children are taller than 7 years old ones. It is an example of

(A) Vertical studies
(B) Cross-sectional studies
(C) Experimental studies
(D) Case studies​

Answers

Answered by anushka220307
5

Answer:

B

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Answered by Ashwinidurgaprasad5
0

Explanation:

B) cross-sectional studies

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