He carbonyl group of an aldehyde or ketone may be reduced via several different methods. select all viable methods for aldehyde/ketone reduction.
a. na2cr2o7 and h2so4
b. wolff-kishner method
c. baeyer-villiger method nh3, h2, and raney ni
d.1) liaih4, 2) h20 clemmensen method
e. kmno4 and h2so4

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.