Tiffany has a keen interest in the original theories of william sheldon regarding the relationship between body type and juvenile delinquency. she has duplicated the study using sheldon's original methodology to see if her results are compatible to sheldon's. such a study illustrates the concept of group of answer choices

replication

Explanation:

According to my research on the scientific method, I can say that based on the information provided within the question such a study illustrates the concept of replication. In the context of the scientific method, replication is the process of conducting an experiment with all the same variables as a previous iteration in order to try to replicate the same results. This is mostly done in order to prove the validity of that experiment.

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productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )