<span>D) The author is speculating, but not providing concrete evidence.
Hope this Helps!</span><span>(￣ω￣)
</span>
I agree with the question above since it is true that the
prosperity of the Boom years led to the extravagant life styles for the wealthy
which eventually led to the collapse of the wall street stock market.
<span>The 1990s economic </span>boom<span> in the United States was a period of economic profitability.</span>
No one knows.
an unnamed narrator
It may be A because all others have commas in incorrect spots
