Blocking, covering, obscuring, hiding, concealing, veiling, shrouding, darkening, extinguishing, shading, dimming, declining, diminution, extinction, penumbra
1, 2, & 4 are ways it benefits students. The other two choices seem to be more about study skills rather than student self reflection benefits.
Fingerprints are unique for every person so they can be used as a form of identification
C goods cuz those e the things that ppl want
