Final answer:
The mini-opera composed by Gershwin for 'George White's Scandals' is known as 'Blue Monday.' The correct option is C.
Step-by-step explanation:
The name of the mini-opera composed by George Gershwin for George White's Scandals is Blue Monday. This 1922 composition is sometimes referred to as the "135th Street" mini-opera and is an early example of Gershwin blending classical music with jazz influences.
While Porgy and Bess is perhaps Gershwin's most famous opera and Rhapsody in Blue is one of his well-known compositions, neither of these is the correct answer.
Of Thee I Sing is a musical with scores by Gershwin but is not an opera. Therefore, the correct selection from the given options is C) Blue Monday.