According to the federal regulations, human subjects are living individuals about whom an investigator conducting research obtains information through interaction or intervention with the individual, and uses, studies, or analyzes the information; or:

The correct answer, as the second portion of this excerpt of the whole regulation states: "Obtains, uses, studies, analyzes, or generates identifiable private information, or identifiable biospecimens." (taken from Human Research Protection Office website).

Explanation:

This entire portion makes part of the regulatory norms that have been established in the United States to identify, and classify research as involving human, or not involving human, subjects. This helps researchers to file their paperwork before the IRB agency so that their research project may receive a status, and a recognition, before the regulatory agencies, and they can proceed with their project in the legal and regularized manner that it should follow. For this reason, the regulations specify what a human subject is and what research is, and the particular excerpt placed in this question is part of the portion where the regulation explains what the law defines as a human subject and his/her relationship with a researcher regarding a research project.

i am not in high school so i don’t know