The federal department responsible for overseeing the nation's social insurance program is the department of health and human services family service league public health service office of human development

The correct answer is the Department of Health and Human Services.

DHSS is responsible for many of the United States' social programs, including health care, medicare, and medicaid. The current Secretary of HHS is Alex Azar.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.