50 POINTS + BRAINLIEST PLEASE HELP ME

What is the speed of sound in water

A, as , to a , as a , is as a. b. c. d.

What was the most difficult obstacle to overcome in the creation of an autonomous state after indian independence was achieved? a british willingness to go to war to retain the region b. religious differences between hindus and muslims c. ethnic differences between tribal regions d. indian princes' inability to decide on a format of government