Last free points im giving away

Which of the following studies is linked most directly to the establishment of the national research act in 1974 and ultimately to the belmont report and federal regulations for human subject protection? a. the public health service tuskegee study of untreated syphilis in the negro male.b. stanford prison experiment (zimbardo).c. tearoom trade study (humphreys).d. the harvard t3 study.

Nepal is the common garden of different caste ethnic groups language and culture briefly explain the statements

In one or two sentences, describe the narrator of "an easy goin' feller."