Use the drop-down menu to complete the sentence. under the u. s. constitution, the president may veto legislation passed by congress, but congress may override a president’s veto. this is an example of the principle of a. checks and balances b. federalism c. popular sovereignty d. judicial review

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.