Question 1

For "Chopin, Frederic, 1810-1849. Revolutionary etude for piano, op. 10, no. 12," you chose (b.) "Etudes, piano, op. 10, no. 12."

That is correct! The uniform title begins with the name of the form ("Etude"). "Revolutionary" is only a popular nickname for this work, but a cross reference in the catalog would direct you to the correct item.

Go on to Question 2.