Federal regulations require that additional safeguards have been included in a study to protect the rights and welfare of these subjects:

Federal regulations require that additional safeguards have been included in a study to protect the rights and welfare of children, prisoners, pregnant women, mentally disabled persons, or economically or educationally disadvantaged persons.

Explanation:

While carrying out any research or a formal study, it is required by law that the guidelines prescribed by the federal government regarding the safety of the subjects are followed. This is because any official citizen, irrespective of his background, status (financial, physical or mental), religion, age, gender, past, etc. is a subject of the federal government, and hence, the federal government requires to ensure the well-being of the citizen by putting certain rules and regulations into place.