Question

Which condition would most likely require the National Weather Service to issue a severe thunderstorm warning?(1 point)
Responses

a large amount of moisture in the air condensing to form clouds
a large amount of moisture in the air condensing to form clouds

a meeting of two air masses with major differences in temperature and moisture
a meeting of two air masses with major differences in temperature and moisture

an air mass developing over a large body of water
an air mass developing over a large body of water

a front moving out of an area

a meeting of two air masses with major differences in temperature and moisture