Answer: Kayla is helping her professor conduct an "OBSERVATIONAL LEARNING" study.
Explanation: Observational study is a type of research study, where a variable is been observed at it natural way, without any external applications to it.
Because Kyle and her professor wants to observe the difference and similarities between two models, when compared to an experimental subject, this makes it an observational study.
The experimental subject is already an outcome that is constant with it's new changed. While the models to be compared to it by observation, are unaltered.