The correct answer is anagram
Answer:
This is an example of a Cross-sectional Design.
Explanation:
A Cross-sectional design or study occurs when a researcher observers <em>various subjects of different aspects</em> such as age in a specific point in time, in order to observe the differences within the subjects.
In this case, we can clearly see it is this type of design since the researcher interviews children from ages 5, 9 and 13 in one specific moment in time.
I’m not sure but africa, south america & India