•f. scott fitzgerald
• ernest hemingway
• william faulkner
• gertrude stein

the individuals in the box above were all in the 1920s.

a.) progressive leaders
b.) harlem renaissance leaders
c.) american writers
d.) famous inventors

The correct answer is C. American writers.

Explanation

F. Scott Fitzgerald was an American writer who was born in 1896 and died in 1940, he wrote 5 novels among those are This Side of Paradise (1920), The Great Gatsby (1925), Tender Is the Night (1934) and The Last Tycoon (1941).  

Ernest Hemingway was an American writer who was born in 1899 and died in 1961, he wrote 10 novels among those are The Torrents of Spring (1926), The Sun Also Rise (1926), A Farewell to Arms (1929) and To have and Have Not (1937).

William Faulkner was an American writer who was born in 1897 and died in 1962, he wrote 19 novels among those are Soldiers' Pay (1926), Mosquitoes (1927), Sartoris (1929), The Sound and the Fury (1929) and As I Lay Dying (1930).

Gertrude Stein was an American writer who was born in 1874 and died in 1946, she wrote around 26 documents among those are A Circular Play (1920), Useful Knowledge (1929), The Making of Americans: Being a History of a Family's Progress (1925) and How to Write (1931).

So, the correct answer is C. American writers.

number 1 is a)