Well A, B, and C all would not properly describe bedlam, and here's why, bedlam means uproar and confusion, but sweltering means hot, serene means peaceful, and humdrum means dull. Now tumultuous means unsteady, that is the only adjective that describes bedlam properly. :)
I would say the answer would be D
A. Suspenseful / sounds like everything is on edge waiting for something bad to happen
This time period was called the Harlem Renaissance.
Answer:
Not having received worldwide fame for their achievement, these inventors creation certainly have improved the lives of the many people
