The correct answer is C; It is the time of year when the temperature contrast is greatest between colliding polar and tropical air masses over the central United States.
Further Explanation:
In Texas, they have had tornadoes occur throughout the year. However, there is a greater risk for tornadoes in the springtime in Texas and other Midwest states. Since the risk is greater in the spring, this is why public service announcement are made.
Most cities in the United States have a tornado siren that is tested weekly in the spring and summer months. This will give warning to residents that they are to seek shelter immediately. If a tornado hits in the middle of the night, the alarms may not be turned on and this can be fatal and many people can be injured. It is important to learn about tornado safety before the bad weather starts.
Learn more about tornadoes at https://brainly.com/question/12049344
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