Acommunity in texas broadcasts public service announcements on tornado safety right before spring. why is this the most effective time to do so?
a)
it is the time of year when the temperature contrast is greatest between colliding polar and tropical air masses over the central united states.
b)
it is the time of year when the temperature contrast is the least between colliding tropical air masses over the central united states.
c)
it is the time of year when the temperature contrast is the least between colliding polar and tropical air masses over the central united states.
d)
it is the time of year when the temperature contrast is greatest between colliding tropical air masses over the central united states.

the answer is d.

Explanation:

usually when there is a great variance in storm fronts, the cooler atmosphere and warmer weather on land collide to create more storms...hence tornados, etc

Option (A)

Explanation:

Tornadoes are usually defined as those large violent storms that occur in the mid-latitude region, where the north-moving warm and moist tropical air mass collides with the south-moving cold and dry polar air mass.

In the United States, there occur frequent and severe storms during the time of spring season, which includes the months of April, May, and June.

So, before the starting of the spring season, it is the best time of the year for the communities in the city of Texas to broadcasts public service announcements on the possible occurrence and effects of tornadoes.

Thus, the correct answer is option (A).

the temperature of the gas, in k, not celsius.