Replications are designed to ensure that - the original study was high in psychological realism - the original results can be obtained in different populations and in different settings - the original study was internally valid ethical procedures are always followed

the original study was internally valid

Explanation:

According to my research on the scientific method, I can say that based on the information provided within the question replications are used to ensure that the original study was internally valid. Something being internally valid means that the cause and effect of that study is correct. That is where replication comes into play, since by being able to replicate the results of an experiment various times using the same procedure and variables then it proves the validity of the experiment's results.

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the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.