I am working on my take home quiz questions now...and i am not sure about the answers of the folowing questions...can anyone please help me to check???? THANKS A LOT!!!! (The "*" represents the answer I chose)

In the United States, early warning systems have not greatly reduced the amount
of damage caused by hurricanes.
* True
False

Smoke released from a stack into a very stable air mass would tend to
A) mix both upward and downward.
B) diffuse rapidly in all directions.
C) go almost straight up.
*D) spread out horizontally but not mix up or down.
E) mix rapidly downward.

The primary purpose of a smokestack is to
A) burn off inversion layers.
* B) change the lapse rate.
C) reduce the concentration of pollutants at ground level.
D) promote adiabatic cooling of the smoke.

Assume you live in an urban setting and an inversion is present. Which of these
best describes the visibility in your area if the inversion remains for 2 or 3 days?
A) Visibility improves greatly.
*B) Visibility gets steadily worse.
C) improves slightly
D) little or no change

27) Building tall smokestacks may improve local air quality.
* A) True
B) False

28) Air pollution affects weather, and weather affects air pollution.
* A) True
B) False