Answer:
Replication
Explanation:
Replicating a study means that other researchers are able to replicate the procedure of a published study and find similar or different results. Replication is very important in science. It can act as a filter for the community itself, as a researcher's field colleagues can ascertain whether the effect reported in a study is reproducible, generalizable, or limited. Based on this, we can conclude that if Dr. Ambra is skeptical about the results of a sleep deprivation survey, the best she can do is to replicate the research and prove whether the results are reliable or not.
Obesity is the condition of being grossly fat or overweight, and the most common tool to diagnose it is BMI, the Body Mass Index.