Question 4
For "Stravinsky, Igor, 1882-1971. Petruchka: A ballet-burlesque in 4 scenes," you chose (a.) "Petroushka."
That is correct! Petroushka is Stravinsky's title for this ballet. Note that the title-page title differs in spelling from the original spelling shown in the correct uniform title. Cross references may be found in such cases to direct you to the original form of the title.
Go on to question 5.

