Final answer:
Gershwin was hired to write short selections for George White's Scandals in the 1920s.
Step-by-step explanation:
The correct answer is A) 1920s. Gershwin was hired to write short selections for George White's Scandals in the 1920s. The George White's Scandals were a series of Broadway revues that ran from 1919 to 1939, and Gershwin's involvement in the show began in the 1920s.