Ais a funnel shaped windstorm. a. hurricane b. thunder storm c. typhoon d. tornado

Answer is D. Tornado

Tornadoes are intense rotating air columns which appear like funnel and wider at the top. Tornado is caused due to change in wind speed and wind direction at high altitude. This change cause air to swirl which forms tornado. Tornado brings intense wind over 200 miles per hour and can destroy buildings, turn down vehicles and creates flying derbies.  

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