According to vygotsky, the skills, knowledge, and concepts that the learner is close to acquiring but cannot yet master without is referred to as
a) zone of proximal development
b) guided participation
c) operant conditioning
d) selective adaptation

United states v.  nixon, 418  u.s.  683 (1974),  was  a landmark  united states supreme court case  that resulted in a unanimous  decision  against president richard  nixon, ordering him to deliver tape recordings  and  other subpoenaed materials to a  federal  district  court.

My opinion is that it doesn't