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. :)
The answer is On December 17, 1903,
To show why and how stress happens and what it does
