The word Udhauli is conjunction of the word Uhdo + Auli which means Udhauli or downward. While Ubhauli is a word made up by Ubho + Auli which means Ubhauli or upward. Udhauli and Ubhauli festivals are celebrated in two different seasons (summer and winter) of the year.
I believe the right answer is 3
D. Bishops
It really depends upon the time you are studying but this may be the correct answer.
The Great Dust Bowl
Ku Klux Klan
Prejudice
Prohibition