Which of the following movements mocked and challenged classical notions of people's behavior and values, particularly those who were materialists and nationalists? a. surrealism b. art deco c. dada d. modernism

i think its the dada art movement.

beethoven's first public performance in vienna was on march 29, 1795. he gave a piano concert, or akademie, in vienna's burgtheater as part of an event organized by joseph haydn (probably op. 15). in these early years, beethoven's success as a composer was closely tied to his career and renown as a piano virtuoso.

explanation: