What is the best definition for the Roaring Twenties?

Question

a. A period of financial, artistic, and cultural prosperity that shaped the US and other Western countries
b. An era when the stock market was at its all-time high
c. A historical period in American history known for global conflicts
d. The cause of the Dust Bowl that would wipe out the US Southern Plains in the 1930s

Answer 1

a. A period of financial, artistic, and cultural prosperity that shaped the US and other Western countries.