What does science study? what does it not study?

As for the responder, science study as much as it can process. Though there are certain principles, theories and laws needed to determine one is truly science. It needs to undergo the scientific method to analyze and gather evidential data and in addition this study should be replicable in the process. Replicable is one strong characteristic of a study that can intensify the reliability and validity of the field. And what science doesn’t study is not until the principles apply to the aforementioned statement. Science can study and wants to understand everything or in as much as the broader scope of each phenomenon, it’s some concepts that are just very hard to gather data, and studies like the metaphysical and paranormal that can’t be repeated. These limitations inhibit scientists to draw data that is reliable and valid, thus, science.   

idk but if i had to take an educated guess i’d say a c d

It feels feed the echo system