Answer:
Additional safeguards that may be included in a social and behavioral study may include: A. Remove all direct identifiers from the data as soon as possible. B. Requiring a legally authorized representative to provide signed consent for an incapacitated subject.
Explanation:
In order to properly conduct a social and behavioral study it is most important to protect the subjects implicated in the study. Since the study is on humans and his reactions, additional safeguards most be taking on account.
Since the data collected is what matters an not the personal or private information, the identifiers from the data should be erased. This is a minimun ethical prosidure, in order to protect the indetity and privacy of the subjects participating in the study.
Another safeguard is to protect vulnerable subjects (if they are required in the study). There for kids or incapacitated subjects must have authorized representative consent.