According to karl marx what group of people would eventually rise up in a social revolution a. bourgeoisie b. proletariat c. nobles d. slaves

B. Proletariat
Marx believed that the proletariat would one day have a revolution with the bourgeoisie, and the bourgeoisie would lose. Marx sees the proletariat as the lower classes, the masses, the common people. The bourgeoisie is more of the middle class society.

B. Proletariat is correct

Although both religions believe in an  endless cycle of births or samsara, there are still some aspects of that belief they differ. For Hindus, they believe in an everlasting soul that is reincarnated while, for Buddhists, they believe that there wasn't a constant soul but a collection of senses, feelings and other intangibles that made up all human beings.